WORDS BY FIRST LETTER AND LENGTH

7 Letter Words Starting With I

Explore 885 English words that start with I and contain exactly 7 letters. Common examples include improve, instead, involve, inspire, inquire.

Browse Other I Word Lengths

7-Letter I Words by Ending Letter

All 885 7-Letter Words Starting With I

iambickObsolete form of iambic.iambicsplural of iambiciambistOne who writes in iambic meter.iambize(archaic, transitive) To satirize in iambs; to lampoon.iapygidAlternative spelling of japygid.ibaliid(zoology) Any cynipoid wasp in the family Ibaliidae.icariinThe tert-amyl alcohol derivative of kaempferide 3,7-O-diglycoside.icarrinMisspelling of icariin.icastic(rare) imitative or figurative; making a likenessicebagsplural of icebagicebathAlternative spelling of ice bath.icebeltA belt of ice forming round the shores in Arctic regions.icebergA huge mass of ocean-floating ice which has broken off a glacier or ice shelf [from 19th c.]icebird(archaic) Any seabird, such as the northern fulmar, that lives in icy regions.icecapsplural of icecapicecoldAlternative form of ice-cold.icecube(rare) Alternative form of ice cube.icedropAlternative form of ice drop.icefallA relatively rapid and turbulent flow of ice, somewhat analogous to a waterfall.icefishAny member of notothenioid family Channichthyidae; these Antarctic fishes are named for the lack of hemoglobin in their bloodicefloeAlternative form of ice floe.icefootSynonym of icebelt.icefreeAlternative form of ice-free.icelandA land or region of icy terrain.icelikeResembling ice.icemeltThe melting of a geographical mass of ice.icepackAlternative spelling of ice pack.icepickA pointed tool, shaped like an awl, used for breaking ice.icerinkAlternative spelling of ice rink.icerootThe plant goldenseal (Hydrastis canadensis).icesparAlternative form of ice spar.icetime(ice hockey, ice skating) Time spent on the ice rink.icetrayAlternative spelling of ice tray.icewardTowards the iceicewineAlternative spelling of ice wine.icework(geology) Glacier action.icewormAlternative form of ice worm.ichibooAlternative form of ichibu.ichniteA fossilized footprint or track of an animal.ichthicAlternative form of ichthyic.ichthin(archaic, biochemistry) A nitrogenous substance resembling vitellin, present in the egg yolk of cartilaginous fishes.ichthusAlternative form of ichthys.ichthysA stylized representation of a fish, used as a Christian symbol.icicledHung with icicles.iciclesplural of icicleicinessThe state or quality of being icy or very cold; frigidity.iconicsThe study of images and symbols as a form of communication.iconify(transitive) To make into an icon.iconiseNon-Oxford British English form of iconize.iconismThe formation of a figure, representation, or semblance; a delineation or description.iconize(transitive) To form an image or likeness of someone.icosian(mathematics) Any of a specific set of Hamiltonian quaternions with the same symmetry as the 600-cell.icpalli(historical) A seat or throne in ancient Aztec culture.ictericRelating to jaundice.icterid(ornithology) Any member of the family Icteridae of grackles and related New World birds.icterus(medicine) An excess of bile pigments in the blood; jaundice.ictusesplural of ictusideallyIn an ideal way; perfectly.ideatedsimple past and past participle of ideateideatorOne who ideates; one who holds or generates an idea, or synthesizes a concept.identic(diplomacy, obsolete) Precisely agreeing in sentiment or opinion and form or manner of expression; applied to concerted action or language used by two or more governments in treating with another government.ideologRare spelling of ideologue.idionym(anatomy) A word that refers to one specific anatomical part.idiopid(zoology) Any spider in the family Idiopidae.idiotcy(dated) Synonym of idiocy.idioted(obsolete) Rendered idiotic; befooled; made to look silly.idiotic(of a person or animal) Pertaining to or resembling an idiot; characterised with behaviour resembling idiocy.idiotly(informal) In the manner of an idiot; idiotically.idiotor(informal, humorous) An editor who makes idiotic decisions or writes idiotorials.idiotry(obsolete) Idiocyidledom(dialectal, Scotland) Idleness.idleful(obsolete) idleidlesse(obsolete) idlenessidleton(West Country, Somerset, obsolete) An idle man.idoliseNon-Oxford British English standard spelling of idolize.idolishResembling or characteristic of an idol.idolist(obsolete) An idolator (worshipper of idols).idolizeTo make an idol of, or to worship as an idol.idolous(obsolete) idolatrousidoneal(mathematics) Belonging to the set of positive integers that cannot be expressed as ab + bc + ac for distinct positive integers a, b, and c.idorgan(biology, archaic) A plastid or unicellular organism, theoretically capable of development into a metazoan.idoteid(zoology) Any in the family Idoteidae of isopods.idylistAlternative spelling of idyllist.idyllicOf or pertaining to idylls.iffiestsuperlative form of iffy: most iffyifritah(Arab mythology) A female ifrit.igarapeAlternative form of igarapé.ignatia(homeopathy) A homeopathic remedy made from the plant Strychnos ignatii.ignavia(theology) The sin of sloth, idleness, or moral cowardice.igneousPertaining to or having the nature of fire; containing fire; resembling fire.ignitedsimple past and past participle of igniteigniterAny device that is used to ignite something, especially a fuel mixture, or a charge of explosiveignitesthird-person singular simple present indicative of igniteignitorAlternative spelling of igniter.ignobleNot noble; plebeian; common.ignoblyin an ignoble mannerignoralThe act of ignoring something.ignoredsimple past and past participle of ignoreignoree(rare) A person who is ignored.ignorerOne who ignores.ignoresthird-person singular simple present indicative of ignoreigqirhaA Xhosa witch doctor.iguanasplural of iguanaiguanid(zoology) Any lizard of the family Iguanidae.ihleite(mineralogy) The mineral copiapite.ijoliteA rare igneous rock consisting essentially of nepheline and augite.ijtihad(Islam) The process of Muslim jurists or scholars making a legal or scientific judgment by independent reasoning from the Qur'an and the Sunna; discretion.ikebana(uncountable) The Japanese art of flower arrangement.ikejimeA method of killing a live fish wherein a spike is forcefully inserted into the hindbrain.ikhshid(historical) Title of rulers of Ferghana and Sogdia in Transoxiana.ilariid(zoology) Any extinct marsupial in the family Ilariidae.ileallyIn an ileal manner; of, into, or by means of the ileum.ileitis(pathology) Inflammation of the ileum.ilesite(mineralogy) A monoclinic-prismatic mineral containing hydrogen, iron, manganese, oxygen, sulfur, and zinc.iliacalAlternative form of iliac.iliacus(anatomy) A flat triangular muscle that fills the iliac fossa.iligantPronunciation spelling of elegant.illapse(rare) A gliding in; an immission or entrance of one thing into another.illbredAlternative form of ill-bred.illegalContrary to, forbidden, or not authorized by law, especially criminal law.illegit(informal) illegitimateilleism(often linguistics) The practice of (excessively) referring to oneself in the third person.illeistSomeone who refers to themselves in the third person.illeity(philosophy) An external embodiment of the self.illfareMisfortune; detriment; harm; evilfare.illicit(law) Not approved by law, but not invalid.illiticOf or relating to the mineral illite.illness(countable) An instance (episode) of a disease or poor health.illogicSynonym of illogical.illoyal(obsolete) Disloyal.illsomeCharacterised by ill or illnessilludedsimple past and past participle of illudeilludesthird-person singular simple present indicative of illudeilludin(organic chemistry) Any of a family of sesquiterpenes with antitumor antibiotic properties produced by some mushrooms.illumedsimple past and past participle of illumeillumer(archaic) One who illumes.illumesthird-person singular simple present indicative of illumeiluppaiSynonym of mahua (“Indian tree”).ilvaite(mineralogy) A black, crystalline sorosilicate of iron and calcium.ilysiid(zoology) Any snake in the family Ilysiidae, a synonym of the Aniliidae.imagersplural of imagerimageryThe work of one who makes images or visible representation of objects.imagine(transitive) To form a mental image of something; to envision or create something in one's mind.imagingpresent participle and gerund of imageimagism(poetry) A form of poetry utilising precise imagery and clear language.imagist(art) A follower of any of the various artistic schools known as imagismimagoesplural of imagoimamate(Islam) The office or jurisdiction of an imam.imaretsplural of imaretimbalan(music) Synonym of imbal.imbargoArchaic form of embargo.imbatheObsolete form of embathe.imbaubaAny tree of the genus Cecropia.imbibedsimple past and past participle of imbibeimbiberOne who imbibes, who drinks, especially alcoholic beverages.imbibesthird-person singular simple present indicative of imbibeimbizosplural of imbizoimblazeArchaic form of emblaze.imbongi(chiefly South Africa) A praise singer, a traditional bard in Zulu culture.imbosomAlternative spelling of embosom.imbound(archaic) To enclose in limits; to shut in.imbowelArchaic form of embowel.imbowerArchaic form of embower.imbraceObsolete spelling of embrace.imbraidObsolete form of embraid.imbreed(nonstandard) Alternative form of inbreed.imbringAlternative form of inbring.imbrownArchaic spelling of embrown.imbruedsimple past and past participle of imbrueimbruteTo make brutalimbuingpresent participle and gerund of imbueimburse(transitive, obsolete) To put into a purse; to save, to store up.imidate(organic chemistry) Any ether of an imine, having general formula R-N=C(OR)Rimidine(chemistry) any analogue of a cyclic acid anhydride in which each =O is replaced by =NR and -O- by -NR-imidoyl(chemistry, especially in combination) carboximidoyliminentMisspelling of imminent.iminium(organic chemistry) A form of quaternary ammonium cation derived from an imine, R₂C=N⁺R₂.iminoxySynonym of alkylideneaminoxyl.imitateTo follow as a model or a pattern; to make a copy, counterpart or semblance of.immenseHuge, gigantic, very large.immerge(transitive) To plunge (something) into, under, or within anything, especially a fluid; to immerse, to dip.immeritLack of worth; demerit.immerse(transitive) To place within a fluid (generally a liquid, but also a gas).immixed(obsolete) Not mixed; pure.immobleObsolete form of immobile.immoralBreaching principles of natural law, rectitude, or justice, and so inconsistent with the demands of virtue, purity, or "good morals"; not right, not moral. (Compare unethical, illegal.)immould(obsolete, transitive) To mould into shape; to form.immoved(archaic) unmoved; motionless; at restimmuredsimple past and past participle of immureimpactsplural of impactimpaint(obsolete, transitive, figurative) To paint; to decorate with colours.impairsthird-person singular simple present indicative of impairimpalasplural of impalaimpaledPinned to something by piercing.impalerOne who impales.impalesthird-person singular simple present indicative of impaleimpallaDated form of impala.impalsy(transitive, archaic, poetic) To strike with palsy; to paralyze, deaden, or stunimpanelTo enrol (jurors), e.g. from a jury pool; to register (the names of jurors) on a "panel" or official list.impartsthird-person singular simple present indicative of impartimpasseA road with no exit; a cul-de-sac.impasta(molecular gastronomy) Pasta analogue created by using ingredients that are not grains (ie. semolina, maize, rice) or grain substitutes (ie. potato, quinoa), such as a sheet of pasta analogue made out of gelatinimpaste(transitive, archaic) To knead; to make into paste; to concrete.impasto(painting) The use of a thick-bodied paint to create peaks and crests that physically extend from the surface of a painting.impavid(archaic) fearless, undauntedimpeachTo hinder, impede, or prevent.impearl(transitive, poetic) To form into pearls, or make pearly.impededsimple past and past participle of impedeimpederOne who impedes.impedesthird-person singular simple present indicative of impedeimpendsthird-person singular simple present indicative of impendimperiaplural of imperiumimperil(transitive) To put into peril; to place in danger.impetusAnything that impels; a stimulating factor.impiety(uncountable) The state of being impious.impimpi(South Africa) A police informer.impinge(intransitive, rarely transitive) To make a physical impact on.implant(transitive) To fix firmly or set securely or deeply.implate(archaic, transitive) To cover with plates or plating.implead(law) to sue in court, raise an action against a defendantimplete(transitive, formal) To fill.impliedSuggested without being stated directly; implicated or hinted at.implierOne who implies.impliesthird-person singular simple present indicative of implyimplikePossessing the qualities or appearances of an imp.implode(intransitive) To collapse or burst inward violently.imploreTo beg or plead for (something) earnestly or urgently; to beseech.impoofo(archaic) The eland.importsplural of importimposal(obsolete, rare) The act of imposing; imposition.imposedsimple past and past participle of imposeimposerOne who imposes.imposesthird-person singular simple present indicative of imposeimpostsplural of impostimpound(transitive) To shut up or place in an enclosure called a pound.impowerArchaic form of empower.impowreObsolete form of empower.impregn(now rare, poetic) To impregnate; to make fruitful.impresa(heraldry) A device on a shield or seal, or used as a bookplate etc.impresh(informal) Clipping of impression, in various senses.impress(transitive) To affect (someone) strongly and often favourably.imprestAn advance of funds, especially to a government service or employee.imprime(transitive, obsolete) To drive (a hunted animal) out of its shelter.imprintAn impression; the mark left behind by printing something or by pressing on something, or the figurative counterpart of such a mark.improveto make or become betterimpshipThe state of being an imp.impudic(non-native speakers' English) Immodest.impugnsthird-person singular simple present indicative of impugnimpulseA thrust; a push; a sudden force that impels.imputedsimple past and past participle of imputeimputerSomeone who imputes.imputesthird-person singular simple present indicative of imputeimsonic(obsolete) Of or relating to the theory that the words or names for things are formed by imitating the sounds associated with those things.inachid(zoology) Any crab in the family Inachidae.inamdar(India, historical) One who received a grant or gift of lands from the British Raj as a reward for service.inamourArchaic form of enamor.inanelyIn an inane manner.inanery(rare) Synonym of inanity.inanestsuperlative form of inane: most inaneinangasplural of inangainanity(uncountable) The property of being inane, of lacking material of interest or satisfaction, emptiness.inapproAlternative form of inappropo.inaptlyIn an inapt manner; inappropriately.inaugur(transitive, obsolete) To inaugurate.inbeingThe fact or state of being in; existence in something else.inbirth(rare) An inner or inward birthinblind(obsolete, transitive) To produce blindness in; make blind; blind.inblownBlown in or into.inboard(nautical) Situated within the hull of a vessel.inboundComing in, heading inwardsinboxesplural of inbox, an alternative form of in-box.inbreadSynonym of impanate.inbreak(transitive) To break in; break into; make an incursion into; insert into; interrupt.inbreedTo breed or reproduce with those that are related.inbring(transitive) To bring in; introduce; present; usher in; adduce; induce; cause to come in.inbrokesimple past of inbreakinbuildto build in, construct in such a way as to possess an integral part, includeinbuiltExisting as an essential constituent; built-in; inherent; integral.inburntinnate or hard-wiredinburstA bursting in or into.incaite(mineralogy) A triclinic-pinacoidal lead gray mineral containing antimony, iron, lead, sulfur, and tin.incalmoThe glasswork technique of joining together two separately blown glass bubbles while they are still hot.incasedsimple past and past participle of incaseincasesthird-person singular simple present indicative of incaseincavedEnclosed within, or as if inside, a cave.incenseBiotic material that releases fragrant smoke when burnt, often used in religious rites or for aesthetic reasons.incensyResembling or characteristic of incense, especially in aroma.inceststhird-person singular simple present indicative of incestincesty(informal) Incestuous.inchantObsolete form of enchant.inchaseArchaic form of enchase.inchfulA quantity that measures an inch.inchingpresent participle and gerund of inchinchman(Australia, chiefly Tasmania) Any of several species of large, aggressive ants of the genus Myrmecia, mainly endemic to Australia.incipitThe first few words of a text, especially its first line.incisalRelating to an incisor, or to the cutting edge of a toothincised(biology) cut, particularly with a V shapeincisesthird-person singular simple present indicative of inciseincisor(anatomy, zootomy) A narrow-edged tooth at the front of the mouth of mammals, between the canines and adapted for cutting; in humans there are four in each jaw.incitedsimple past and past participle of inciteinciteeOne who is incited.inciterOne who incites.incitesthird-person singular simple present indicative of inciteincivil(rare) Displaying a lack of courtesy; rude, impolite.inclaspArchaic form of enclasp.inclave(heraldry) Resembling a series of dovetails; said of a line of division, such as the border of an ordinary.incline(transitive) To bend or move (something) out of a given plane or direction, often the horizontal or vertical.inclose(now uncommon) Alternative form of enclose.incloudObsolete form of encloud.includeTo bring into a group, class, set, or total as a (new) part or member.incomerOne who comes in.incomesplural of incomeinconelAny of a family of corrosion- and oxidation-resistant nickel-chromium superalloys that retain strength at high temperatures.inconnuA large salmonid fish, Stenodus nelma, with a large mouth with a protruding lower jaw and a high and pointed dorsal fin.increep(intransitive, poetic) To creep in; to make a furtive entrance.increst(transitive) To adorn with a crest.incrossAn organism formed by close inbreeding.incrustAlternative form of encrust.incubus(mediaeval folklore) An evil spirit supposed to oppress people while asleep, especially to have sex with women as they sleep.incudalOf or relating to the incus.incudesplural of incusincurreObsolete spelling of incur.incurve(transitive, rare) To cause something to curve inwards.incusesplural of incuseincwalaA Swazi ceremony that marks the first fruits of the harvestindaminObsolete spelling of indamine.indanol(organic chemistry) Either of two isomeric secondary alcohols derived from indane.indanyl(organic chemistry, especially in combination) A univalent radical derived from indaneindazolObsolete spelling of indazole.indeedeObsolete spelling of indeed.indeedy(humorous) indeedindelve(transitive, obsolete) To bury.indenesplural of indeneindenol(organic chemistry) hydroxylated indene. Some of indenol isomers are enol form of an indanone.indentsplural of indentindenyl(organic chemistry, especially in combination) A univalent radical derived from indeneindepthAlternative form of in-depth.indexalSynonym of indexical.indexedHaving an index, or arranged in an index.indexerA person or program which creates indexes.indexesplural of indexindiacaA sport resembling peteca, played with a large shuttlecock rather than a ball.indiansplural of indianindican(organic chemistry) A glycoside obtained from plants of genus Indigofera, the source of natural indigo dye.indicesplural of indexindiciaplural of indiciumindictsthird-person singular simple present indicative of indictindigenAn indigene or native.indigosplural of indigoinditedsimple past and past participle of inditeinditerOne who indites.inditesthird-person singular simple present indicative of inditeindlamuA traditional Zulu dance from South Africa in which the dancer lifts one foot over the head and brings it down hard, landing squarely on the downbeat.indogen(organic chemistry) A complex nitrogenous radical, C₈H₅NO, regarded as the essential nucleus of indigo.indolesplural of indoleindolicOf or pertaining to indole, or having a similar structureindolin(organic chemistry) A dark resinous substance, polymeric with indol, obtained by the reduction of indigo white.indolyl(chemistry) An indole radicalindoorsInside, into, or within a building.indorseArchaic spelling of endorse.indoxyl(organic chemistry) A hydroxyl derivative of indole produced by bacterial degradation of indoleacetic acidindraftAlternative form of indraught (“drawing in”).indrawnHaving been drawn in or inward.indread(transitive, archaic) To inwardly dread; fear or be afraidindriid(zoology) Any lemur in the family Indriidae.inducedsimple past and past participle of induceinduceeOne who, or that which, is induced.inducerOne who, or that which, induces.inducesthird-person singular simple present indicative of induceinductsthird-person singular simple present indicative of inductindulge(intransitive, often followed by "in"): To yield to a temptation or desire.indulinAlternative form of induline.indultoAlternative form of indult.indunasplural of indunaindusiaplural of indusiumindwellTo exist within, especially as a spirit or driving force.indweltsimple past and past participle of indwellinearth(transitive, chiefly poetic) To put into the earth; inter.inedita(bibliography) Unpublished literary works.inemuriThe practice of dozing at school or work, interpreted in Japanese culture as evidence that a person has been working hard.ineptlyIn an inept or incompetent manner.inerect(rare) Synonym of unerect.inertedsimple past and past participle of inertinertia(physics, uncountable or countable) The property of a body that resists any change to its uniform motion; equivalent to its mass.inertlyIn an inert manner.inesite(mineralogy) A triclinic-pinacoidal mineral containing calcium, hydrogen, manganese, oxygen, and silicon.inexactImperfectly conforming; exceeding or falling short in some respect.inexist(obsolete) To exist or live within.infamieObsolete form of infamy.infancyThe earliest period of childhood (crawling rather than walking).infantaThe daughter of a king in Spain or Portugal.infante(historical) Any son of the king of Spain or Portugal, sometimes except the eldest or heir apparent.infantsplural of infantinfarce(obsolete) To stuff or to swell.infarct(pathology) An area of dead tissue caused by a loss of blood supply; a localized necrosis.infaunaAny aquatic organism that lives within the dominant medium of its environment, but especially within aquatic sedimentsinfauntObsolete form of infant.infaust(medicine, rare) Of a prognosis: Poor, grim.infectsthird-person singular simple present indicative of infectinfeoffAlternative form of enfeoff.infernoA place or situation resembling Hell.infeststhird-person singular simple present indicative of infestinfidelRejecting a specific religion.infieldThe area inside a racetrack or running track.infight(intransitive) To fight with allies or other members of the same group.infimal(mathematics) Of or pertaining to an infimum.infimum(mathematics) (of a subset) the greatest element of the containing set that is smaller than or equal to all elements of the subset. The infimum may or may not be a member of the subset.infinitObsolete spelling of infinite.infitah(historical) Egypt's policy, after the 1973 war, of encouraging the private sector and stimulating foreign investment.infixal(of a word) That may be modified by the addition of an infix.infixesplural of infixinflame(transitive) To set (something) on fire; to cause (something) to burn, flame, or glow; to kindle.inflare(intransitive) To flare inward.inflate(transitive) To enlarge an object by pushing air (or a gas) into it; to raise or expand abnormallyinflect(transitive) To cause to curve inwards.inflesh(transitive, archaic) To give fleshly form; to incarnate.inflictTo thrust upon; to impose.infloodThe act or process of flooding or flowing in; an inflow or influx.inflowsplural of inflowinfobot(Internet) A chatbot that provides access to a database of information via keywords or questions.infobox(wiki jargon) A consistently-formatted table which is present in articles with a common subject.infomax(mathematics) A particular optimization method, prescribing that a function that maps a set of inputs to a set of outputs should maximize the average mutual information between the two sets, subject to constraints.inforceObsolete spelling of enforce.informsthird-person singular simple present indicative of informinfosecAbbreviation of information security.infoset(computing) An abstract data model of an XML document in terms of a set of information items.infotip(graphical user interface) Synonym of tooltipinfound(obsolete) To pour in; to infuse.infowarinformation warfareinfract(transitive) To infringe, violate or disobey (a rule).infrontMisspelling of in front.infulaeplural of infulainfumed(dated) Dried in smoke; smoked.infusedsimple past and past participle of infuseinfuserA device used for preparing infusionsinfusesthird-person singular simple present indicative of infuseingcibiA traditional surgeon among the Xhosa people.ingenerObsolete form of engineer.ingenie(obsolete) ingenuityingenitAlternative form of ingenite.ingenol(organic chemistry) A particular diterpenoidingenueAn innocent, unsophisticated, naïve, wholesome girl or young woman.ingenui(law) In civil law, a class of freemen who were born free. They were distinguished from the class known as liberti or libertini who, born slaves, had afterwards legally obtained their freedom.ingestaMaterial introduced into the body by the stomach or alimentary canal.ingeststhird-person singular simple present indicative of ingestinglobeObsolete spelling of englobe.ingoinggoing in; enteringingorgeArchaic form of engorge.ingraffObsolete form of engraft.ingraftAlternative spelling of engraft.ingrain(transitive) To dye with a fast or lasting colour.ingrateAn ungrateful or unpleasant person.ingraveObsolete form of engrave.ingressThe act of entering.ingross(otherwise) Archaic form of engross.ingroup(sociology) The social group that one belongs to.ingrownThat has grown inwards or abnormally towards (a part of the body)ingulphObsolete form of engulf.inhabit(transitive) To live or reside in.inhaledsimple past and past participle of inhaleinhalerOne who inhales.inhalesthird-person singular simple present indicative of inhaleinhanceObsolete spelling of enhance.inhaust(transitive) To draw inward or absorb.inheart(transitive) To put heart into; make hearty.inheredsimple past and past participle of inhereinheresthird-person singular simple present indicative of inhereinherit(transitive) To receive (property, a title, etc.), by legal succession or bequest after the previous owner's death.inherseObsolete form of enhearse.inhibin(biochemistry) A peptide hormone, secreted by the gonads, which inhibits the secretion of follicle-stimulating hormone and is thus under consideration as a male contraceptiveinhibit(transitive) To hold in or hold back; to keep in check; restrain.inhouseAlternative spelling of in-house.inhumanOf or pertaining to inhumanity and the indifferently cruel, sadistic or barbaric behavior it brings.inhumedsimple past and past participle of inhumeinhumerOne who inhumes.initialChronologically first, early; of or pertaining to the beginning, cause or origin.inition(obsolete) initiation; beginninginjectsthird-person singular simple present indicative of injectinjoint(obsolete) To disjoint; to separate.injunct(law, transitive) To put an injunction against. (Used both of the party who applies for the injunction and of the judge who grants it.)injuredsimple past and past participle of injureinjurerOne who injures something.injuresthird-person singular simple present indicative of injureinjuria(law) injury; invasion of another's rightsinkableCapable of being inked.inkballThe gall of an oak tree, used to produce ink.inkbushThe plant Forestiera eggersiana.inkciyoA beaded apron worn by the Xhosa people.inkfish(colloquial) An octopus or squid.inkhorn(used attributively, derogatory, of vocabulary) Something or someone pedantic, obscurely scholarly.inkhosiAlternative spelling of inkosi.inkiestsuperlative form of inky: most inkyinkjetsplural of inkjetinklikeResembling ink.inklineA line drawn in ink.inklingUsually preceded by forms of to give: a slight hint, implication, or suggestion given., A vague idea about something.inkneed(archaic) knockkneedinkoosiAlternative form of inkosi.inkshedThe writing of polemical letters or articles.inkwellA store of ink built into a pen, comprising a tube attached to the tip of the pen.inkwoodHypelate trifoliata, a small tree in the soapberry family, native to extreme southern Florida and islands of the Caribbean. It has trifoliate leaves and produces small flowers in early summer.inkworkArt done in ink.inlacedsimple past and past participle of inlaceinlandsplural of inlandinlargeArchaic spelling of enlarge.inlawryThe condition of being an inlaw, within the protection of the law.inlayerSomeone or something that inlays.inlight(intransitive) To shine.inliner(software compilation) A program or algorithm that optimizes code using in-line expansion.inlyingLocated further in (especially from a coast).inmarry(intransitive) To marry a member of one's ingroup.inmatesplural of inmateinmeats(archaic, rare) The viscera of animals, as meat.innardsplural of innardinnatedsimple past and past participle of innateinnerly(rare) Inward; deep-seated.innerve(transitive, archaic) To innervateinnexin(biochemistry) Any of a class of proteins used to create gap junctions in invertebratesinnexonA group of innexins that form a channel through the membrane of a cellinningsA comparable period of play in croquet or roque.innkeep(informal) An innkeeper.innlesswithout an inninnlikeResembling or characteristic of an inn.innuent(obsolete, rare) Conveying a hint or innuendo.innyardThe yard of an inn.inoculaplural of inoculuminorder(transitive) To arrange; order; put in order.inosine(biochemistry, organic chemistry) Any nucleoside formed from hypoxanthine attached to a riboseinositeFormer name of inositol.inosose(biochemistry) A sugar present in muscle tissueinphaseAlternative form of in phase.inplaneWithin a plane.inpoint(broadcasting) The opening portion of an edited sequence of audio or video.inquereObsolete form of enquire.inquestA formal investigation, often held before a jury, especially one into the cause of a deathinquiet(obsolete, transitive) To disquiet.inquire(intransitive, US, Canada, Australia) To ask (about something).inquiryThe act of inquiring; a seeking of information by asking questions; interrogation; a question or questioning.inroadsplural of inroadinsangu(South Africa) Any particular plant which is smoked as a recreational drug, especially (wild) hemp.inscapeA landscape of an indoor setting.insculp(archaic, rare) To engrave; to carve; to sculpt.inseamsplural of inseaminsectsplural of insectinsectyFull of insects.insense(UK, dialect) To make to understand; to instruct.insertsplural of insertinserve(obsolete) To be useful for a purpose, or to somsoneinshaveA two-handled plane for shaving or hollowing out the inside of barrels.inshell(literary, rare) To enclose in a shell.inshootThe act of shooting or moving rapidly inward, as a baseball that is pitched with a curve.inshoreClose to (especially in sight of) a shore.inshureEye dialect spelling of insure.insiderA person who has special knowledge about the inner workings of a group, organization, or institution.insidesplural of insideinsightA sight or view of the interior of anything; a deep inspection or view; introspection; frequently used with into.insigne(dated) An insignia.insinew(transitive, obsolete) To strengthen with, or as if with, sinews; to innerve; to invigorate.insipidUnappetizingly flavorless.insiststhird-person singular simple present indicative of insistinslaveArchaic form of enslave.inslopeA slope that is tilted towards a road.insnareAlternative spelling of ensnare.insnarl(obsolete) To make into a snarl or knot; to entangle.insoberLacking sobriety; drunk.insofarTo such a degree or extent.insolesplural of insoleinsooth(obsolete) trulyinspeak(transitive, archaic, poetic) To speak into, instill into.inspectTo examine critically or carefully; especially, to search out problems or determine condition; to scrutinize.inspire(ambitransitive) To draw in by the operation of breathing; to inhale.inspite(Pakistan) despite, irrespective of, notwithstanding.install(transitive) To connect, set up or prepare something for useinstalsthird-person singular simple present indicative of instalinstampAlternative form of enstamp.instantA very short period of time; a moment.instarsplural of instarinstate(transitive) To install (someone) in office; to establish.insteadIn the place of something (usually mentioned earlier); as a substitute or alternative.insteep(transitive) To steep or soak; drench.instepsplural of instepinstill(transitive) To cause a quality to become part of someone's nature.instilsthird-person singular simple present indicative of instilinstoreinside a store or shopinstrew(transitive) To strew about; scatter in or upon; spread.instyle(obsolete, transitive) To style.insulaeplural of insulainsularOf or being, pertaining to, situated on, or resembling an island or islands.insulinA polypeptide hormone that regulates carbohydrate metabolism (in various animals including humans).insulse(obsolete) insipid, dull, stupid or tastelessinsultsplural of insultinsuredCovered by an insurance policy.insureeSynonym of insured.insurer(insurance) One who insures.insuresthird-person singular simple present indicative of insureinsurge(transitive) To rise up as an insurgent or in an insurgency.insweep(swimming) The motion of a swimmer's arm inward, towards the body.insweptNarrowed at the forward end; said of an automobile frame when the side members are closer together at the forward end than at the rear.inswingAn inward swinging motion.inswung(rare) Swung or bent inward.intakerOne who or that which takes or draws in.intakesplural of intakeinteger(arithmetic) A number that is not a fraction; an element of the infinite and numerable set {..., -3, -2, -1, 0, 1, 2, 3, ...}.intenceRare spelling of intense.intendsthird-person singular simple present indicative of intendintenseOf a characteristic: extreme or very high or strong in degree; severe; also, excessive, towering.intentsplural of intentinteredsimple past and past participle of interinterimTransitional.interneArchaic spelling of intern.internsplural of interninterop(computing) interoperabilityinthralArchaic spelling of enthral.intimalOf or pertaining to an intimaintimasplural of intimaintimin(biochemistry) An adhesin of certain strains of E. coli.intinalRelating to the intine.intinesplural of intineintitleArchaic spelling of entitle.intonedsimple past and past participle of intoneintonerOne who intones.intonesthird-person singular simple present indicative of intoneintrada(music) A piece of music that serves as an introduction.intrant(rare) That enters or penetrates.intrata(music) A piece of music which serves as an introduction.intreatArchaic spelling of entreat.intricoan intricacy; a web of intrigueintrigo(obsolete) Synonym of intrigue (all senses).introit(Roman Catholicism, music) A prayer, typically part of a psalm or other portion of the Bible, read or sung at the start of Mass while or immediately after the priest ascends to the altar.intronsplural of intronintrude(intransitive) To thrust oneself in; to come or enter without invitation, permission, or welcome; to encroach; to trespass.intrunkTo enclose as if in a trunk.intruse(botany) Pushed or projecting inward.intrustArchaic form of entrust.intuitsthird-person singular simple present indicative of intuitintwineArchaic spelling of entwine.intwistAlternative form of entwist.inuendoObsolete form of innuendo.inugamiA guardian dog spirit; an attendant spirit or familiar spirit.inuksukAlternative spelling of inukshuk.inulase(biochemistry) inulinaseinuloid(botany) Not hispidulous.inuringpresent participle and gerund of inureinurnedsimple past and past participle of inurninutile(Philippines) useless (of a person); inept.invadedsimple past and past participle of invadeinvadeeOne who is invaded.invaderOne who invades a region.invadesthird-person singular simple present indicative of invadeinvalidNot valid; not true, correct, acceptable, or appropriate.invasin(biochemistry) Any of a class of proteins associated with the penetration of bacteria into mammalian cellsinveigh(intransitive, with against or occasionally about, formerly also with on, at, upon) To complain loudly, to give voice to one's censure or criticisminvenomArchaic form of envenom.inventsthird-person singular simple present indicative of inventinverseOpposite in effect, nature or order.invertsplural of invertinveststhird-person singular simple present indicative of investinvigor(obsolete) To invigorate.invious(obsolete, poetic) untroddeninvironObsolete spelling of environ.invital(archaic) Not alive; lifeless.invitedsimple past and past participle of inviteinviteeA person who is invited.inviterSomeone who invites.invitesplural of inviteinvitro(demoscene) An intro that provides details of a forthcoming demoparty to which viewers are invited.invoiceThe lot or set of goods as shipped or received.invokedsimple past and past participle of invokeinvokerOne who calls upon (a person, especially a god) for help, assistance or guidance.invokesthird-person singular simple present indicative of invokeinvolveTo have (something) as a component or a related part; to comprise, to include.inwardsTowards the inside.inweave(archaic, literary) To weave in or together; to intermix or intertwine by weaving; to interlace.inwheelThe inner wheel of a mill.inworld(roleplaying games) Inside the world of an MMORPG.inwovenpast participle of inweaveinwriteAlternative spelling of enwrite.inwrotesimple past of inwriteinyanga(Africa) In Zulu communities, a traditional doctor or healerinyoite(mineralogy) A colourless monoclinic mineral with the chemical formula Ca(H₄B₃O₇)(OH)·4H₂O.inzoliaThe ansonica grape variety when used in Sicilyiodatedsimple past and past participle of iodateiodinesplural of iodineiodipiniodized sesame oiliodisedsimple past and past participle of iodiseiodiserAlternative form of iodizer.iodisesthird-person singular simple present indicative of iodiseiodizedsimple past and past participle of iodizeiodizerSomeone or something that iodizes.iodogen(organic chemistry) An iodination reagent, 1,3,4,6-tetrachloro-3α,6α-diphenylglycouril, used in radioiodinationiodosyl(organic chemistry, especially in combination) The univalent -I=O radicaliodoxol(organic chemistry) A five-membered saturated heterocycle containing three carbon atoms, an oxygen atom and a hypervalent iodine atom; its derivatives (especially the benziodoxols) are used as pharmaceuticals etcioduret(chemistry, obsolete) iodideiohexol(pharmacology) A contrast agent.iomanteAn Ainu ceremony in which a brown bear (or sometimes an owl) is raised for two years and then sacrificed.ionisedsimple past and past participle of ioniseioniserAlternative spelling of ionizer.ionisesthird-person singular simple present indicative of ioniseionizedsimple past and past participle of ionizeionizera device that ionizesionizesthird-person singular simple present indicative of ionizeionogelA hybrid material consisting of ionic liquid immobilized within a polymer matrix.ionogen(chemistry) An electrolyte.ionomer(chemistry) A polymer, or a biological macromolecule (such as a protein) in which a small but significant proportion of the constituent monomers have ionic groups.ionomicRelating to an ionome.iopydol(pharmacology) A molecule used as a contrast medium.iotatedsimple past and past participle of iotateiothion(medicine, archaic) Synonym of iopropane.iotizedsimple past and past participle of iotizeiowaite(mineralogy) A trigonal-hexagonal scalenohedral mineral containing chlorine, hydrogen, iron, magnesium, and oxygen.ioxilan(pharmacology) A diagnostic contrast agent that is injected intravenously before taking X-ray images to increase arterial contrast.ipnopid(ichthyology) Any fish in the family Ipnopidae of deepsea tripod fishes.ipocrasObsolete form of hippocras.ipodate(pharmacology) Alternative spelling of iopodate.ipomoea(botany) Any of various twining plants of the genus Ipomoea with showy monopetalous flowers, including the morning glory, the sweet potato, and the cypress vine.ipseity(philosophy) selfhood; individual identityiqtadar(Islam) The holder of an iqta.iracund(rare) Angry; irritableiraggic(soil science) Modified by the use of flooding or surface irrigation.iranite(mineralogy) A triclinic-pedial mineral containing chromium, copper, fluorine, hydrogen, lead, oxygen, and silicon.iraqite(mineralogy) A greenish-yellow radioactive mineral.iratelyIn an irate manner; angrily.irenicsSynonym of irenicism (“behaviour or belief that tends to resolve disputes between denominations or religions”).iresine(botany) Any of the genus Iresine of flowering plants in the amaranth family.irezumitraditional Japanese tattooingiridate(inorganic chemistry) The oxyanion of iridium Ir₂O₇⁶⁻; any salt containing this anion.iridealAlternative form of iridial.iridialRelating to the iris of the eye.iridian(mineralogy) Containing iridiumiridine(poetic, obsolete) iridescentiridiseAlternative form of iridize.iridium(uncountable) A chemical element with an atomic number of 77: a very hard, brittle, silvery-white transition metal of the platinum group.iridize(transitive) To point or tip with iridium.iridoid(organic chemistry) any cyclic monoterpenoid based on 1-isopropyl-2,3-dimethylcyclopentaneiriloneAn isoflavone found in some Iris species.irising(film) The use of an iris shot.irizimaSynonym of chipekwe (“African legendary creature”).irksomeMarked by irritation or annoyance; disagreeable; troublesome by reason of long continuance or repetitionironersplural of ironerironice(obsolete) ironicallyironickObsolete form of ironic.ironiesplural of ironyironingpresent participle and gerund of ironironiseAlternative spelling of ironize.ironishResembling iron.ironism(philosophy) A state of doubt regarding one's own "vocabulary" (set of communicative beliefs) that cannot be removed by making arguments in that vocabulary.ironistSomeone who uses irony in humor.ironize(intransitive) To use irony.ironman(Australia) A form of surf lifesaving competition which combines swimming, board paddling, ski paddling and running.irruent(formal) rushing, moving quickly, especially inwardsirruptsthird-person singular simple present indicative of irruptisabgolAlternative form of ispaghula.isagogeAn introduction, especially (particularly capitalized) Porphyry's introduction to the works of Aristotle.isatide(organic chemistry) A white crystalline substance obtained by the partial reduction of isatin.isatineAlternative form of isatin.ischiac(anatomy) Relating to the ischium.ischialPertaining to the ischium.ischianAlternative form of ischial.ischium(anatomy) The lowest of the three bones that make up each side of the pelvis.ischury(medicine, archaic) The inability to empty the bladderisegory(very rare) Alternative form of isogoria.ishkhanSynonym of Sevan trout.isicocoSynonym of headring (“band worn by married Zulu men”).isidialRelating to the isidium.isidium(lichenology) A vegetative reproductive structure present in some lichens; an outgrowth of the thallus surface, usually with a columnar structure, and consisting of both fungal hyphae and algal cells.islandsplural of islandislandyOf or relating to islands.islemanA man who inhabits an island.isletedHaving little islands.ismaticAddicted to isms, or faddish theories.isoacid(organic chemistry) Any branched-chain fatty acidisoamyl(chemistry) the organic radical derived from isoamyl alcohol; 3-methyl butylisobareObsolete spelling of isobar.isobarsplural of isobarisobase(archaeology, geology) A line drawn on a map or chart connecting places of equal or constant land upheaval or subsidence.isobathA line on a map or chart joining places of equal depth of water; a depth contour.isoboleA line on an isobologram joining points of equal activityisocageAn environmentally-isolated cage used to contain experimental animalsisochar(botany) A line on a map showing areas that contain plants with the same characteristicsisochorAlternative spelling of isochore.isocost(economics) A curve that represents a combination of various inputs that cost the same.isocratA supporter of isocracy.isodont(zoology) Having teeth of equal length.isodoseA line (on a map, etc.) of equal dose of radiation.isodrinAn organochlorine insecticide that is an isomer of aldrin.isodual(mathematics) geometrically congruent to its dualisoecho(meteorology, aviation) A line on a map joining points of equal radar reflectivity.isoetid(botany) A rosette plant that completes its entire life cycle submerged.isoflorAn isoline on a map that connects sites with similar Eocene fossil floras.isoflux(physics) The product obtained by multiplying the flux measurement by the isotopic signature.isoform(biochemistry) Any of several different forms of the same protein, arising from either single nucleotide polymorphisms, differential splicing of mRNA, or post-translational modifications (e.g. sulfation, glycosylation, etc.)isogamy(ethnology) Sexual bonding or marriage involving partners of equal social status.isogenyThe condition of being isogenous.isograd(geology) A line, either on a map or the surface of the Earth, joining points at which metamorphism reached similar pressures and temperatures; actually the intersection of a surface and that of the Earth.isogramA word in which no letter of the alphabet occurs more than once.isogravAn isoline on a map joining points of equal gravitational potential.isogrivA line on a map or chart which joins points of equal grivation, that is, equal angle between grid north and magnetic north.isogyre(microscopy) Dark bands appearing in a conoscopic interference pattern.isohaleSynonym of isohaline.isohume(meteorology) An isoline connecting places with equal relative humidity.isohyetA line of equal rainfall on a map or chart, such as a weather map.isokite(mineralogy) A monoclinic-prismatic mineral containing calcium, fluorine, magnesium, oxygen, and phosphorus.isokont(biology) Having flagella of equal length.isolantThat which is isolated from something else.isolate(transitive) To set apart or cut off from others.isolatoAn isolated person; a hermit or outsider.isolect(linguistics) A language or dialect; coined as a neutral term between ‘language’ and ‘dialect.’isolineAny of several types of line on a map, chart or graph that link points having the same value of a parameter.isomalt(organic chemistry) A glucoside of mannitol that is used as an artificial sweetener.isomass(physics) A condition of having the same mass.isomere(physical chemistry) Archaic form of isomer.isomersplural of isomerisomeryThe quality of being isomeric.isonephAn isoline indicating equal cloud cover.isonomyAlternative form of isonomia.isonymyThe property of having the same name, especially the same family name.isopach(geology) A line on a chart joining parts of a stratigraphic unit that have the same thickness; an isopachous line.isoparm(computer graphics) An isoparametric curve.isophotA line of equal luminance on a map.isopodsplural of isopodisopoll(palynology) A line on a map showing places having the same amounts of a particular pollen.isopore(of a membrane) Having pores of all the same sizeisopterA line on a graph or diagram showing places of equal visual acuityisoptic(geometry) The set of points for which two tangents of a given curve meet at a given angle.isopyre(mineralogy) A form of opal that has iron oxide impuritiesisorcin(organic chemistry) A synthetic metamer of orcin.isospin(physics) A quantum number or symmetry related to the strong interaction and hence to differences between atoms with the same number of nucleons.isotachAn isoline linking places on a map which have equal wind speed.isotaxyisotacticityisotomeA line drawn through a joint to indicate which segments are homologousisotone(nuclear physics) Any of a number of nuclides of different elements that have the same number of neutrons.isotope(topology, transitive) To define or demonstrate an isotopy of (one map with another).isotopy(mathematics) A form of homotopy that is always an embedding.isotronA device that uses an electrical field to separate the isotopes of uranium.isotype(immunology) A marker corresponding to an antigen found in all members of a subclass of a specific class of immunoglobulinsisotypyThe condition of being isotypicisourea(organic chemistry) The imidic acid tautomer of urea H₂NC(=NH)OH and any of its hydrocarbyl derivatives.isovist(architecture) A measurement representing the volume of space visible from a given point of known location.isovite(mineralogy) An isometric-hexoctahedral iron gray mineral containing carbon, chromium, and iron.isoxyid(zoology) Any member of the Isoxyida order of extinct arthropods.isozyme(biology, medicine) Synonym of isoenzyme.issaron(historical units of measure) Synonym of omer: a Hebrew unit of dry volume equal to about 2.3 L or 2.1 quarts.issuant(heraldry) Issuing or emerging from something, especially from the bottom (or a division) of the field or chief, or from an ordinary.issuersplural of issuerissuingpresent participle and gerund of issueisthmalSynonym of isthmicisthmic(anatomy) Relating to an (anatomical) isthmus.isthmus(geography) A narrow strip of land, bordered on both sides by water, and connecting two larger landmasses.istinja(Islam) Ritual cleansing of the urethra or anus after using the toilet.isukutiA traditional Kenyan drum.itacismAlternative form of iotacism.itacistAlternative form of iotacist.italickObsolete form of italic.italics(typography, plural only) Letters in an italic typeface.itardanAlternative form of ittardan.itchiercomparative form of itchy: more itchyitchies(colloquial) An itchy or fidgety condition.itchilyIn an itchy way.itchingpresent participle and gerund of itchitemise(British spelling) Alternative spelling of itemize.itemize(ambitransitive) To state in items, or by particularsitemsetAlternative form of item set.iterantMarked by repetition or iteration.iterate(computing) To perform or repeat an action on each item in a set.ithonid(zoology) Any insect of the moth lacewing family Ithonidae.itraminA particular vasodilator.itsselfSynonym of itself.ittriumArchaic form of yttrium.ituriteA fiber made from the stem of the plant Ischnosiphon obliquus.itzebooAlternative form of ichibu.iusticeObsolete typography of justice.ivoride(archaic) A celluloid compound used as a substitute for ivory.ivoriedDecorated with ivory.ivoriesplural of ivoryivorine(literary) Resembling ivory; white, smooth.ivoristA carver of ivory.ivoroid(dated) A synthetic celluloid plastic resembling ivory.ivylikeResembling ivy.ixionid(Greek mythology) A centaur.ixodoidAny tick of the superfamily Ixodoidae.ixoliteA fossil resin, found in bituminous coal, that becomes soft and sticky when heated.iyengar(yoga) A form of hatha (yoga) that focuses on precision in asana and pranayamaizakayaA Japanese bar that also sells snacks.izhitsaThe obsolete Cyrillic letter Ѵ, ѵ, formerly used in Russian to represent upsilon in borrowed words.izzardsplural of izzard

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