WORDS BY FIRST LETTER AND LENGTH

4 Letter Words Starting With O

Explore 214 English words that start with O and contain exactly 4 letters. Common examples include only, open, odso, ofcr, oipe.

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4-Letter O Words by Ending Letter

All 214 4-Letter Words Starting With O

oakyResembling or characteristic of the oak tree or its wood.oareObsolete spelling of oar.oart(India) A coconut plantation.oast(British) A kiln for drying tobacco, malt and especially hops.oathA statement or promise which is strengthened (affirmed) by such a pledge.oatyContaining oats.obanArchaic form of obang (“Japanese coin”).obboTo keep under police observation.obby(informal, Roblox) An obstacle course.obdt(obsolete) Abbreviation of obedient, at one time used in correspondence.obeaAlternative form of obeah.obex(anatomy) A small, crescentic fold of white matter that covers the inferior angle of the floor of the fourth ventricle.obey(transitive) To do as ordered by (a person, institution etc), to act according to the bidding of.obiaAlternative form of obeah.obit(Christianity, historical) A mass or other service held for the soul of a dead person.oboe(music) A soprano and melody wind instrument in the modern orchestra and wind ensemble. It is a smaller instrument and generally made of grenadilla wood. It is a member of the double reed family.obol(historical) A silver coin of Ancient Greece.obooAlternative form of ovoo (“Mongolian cairn”).obvi(slang) Clipping of obvious.obvs(slang, text messaging, Internet slang) Clipping of obviously.obvy(slang) Alternative form of obvi (“obviously”).occy(Australia, slang) An octopus (sea creature).ochaJapanese tea, usually green tea.oche(darts) A line behind which a player's front foot must be placed when throwing a dart.ocky(New York City, slang) Having large, well-developed musclesocraObsolete spelling of okra.ocreObsolete spelling of okra.ocroObsolete spelling of okra.octa(meteorology) The proportion of the sky that is obscured by clouds, in eighths (one octa means that one eighth of the sky is obscured, two octas that one quarter is obscured, and so on).octo(diving, slang) An octopus (safety device).odalThe ownership and claim of such land.oddsThe ratio of the probability of an event happening to that of it not happening.odeaplural of odeonodee(New York City slang) Very, extremely.odenA Japanese one pot winter dish, of varying ingredients.odicOf or pertaining to odes.odorAny smell, whether fragrant or offensive.odso(obsolete) Expressing surprise or affirmation.odumSynonym of mvule ("a tree of species Milicia excelsa")odylObsolete spelling of odyle.oeuf(humorous, only in puns or referring to French cooking) An egg.ofanAlternative form of ophan.ofay(US, ethnic slur, slang) A white person.ofcrAbbreviation of officer.oferAlternative form of oh for.offa(colloquial) Off of.offnPronunciation spelling of off, representing African-American Vernacular English.offsthird-person singular simple present indicative of offoffy(Ireland, British, slang) An off-licence.ogacSynonym of Greenland cod.ogamAlternative spelling of Ogham.ogee(architecture) A double curve in the shape of an elongated S; an object of that shape.oggy(UK, dialect, Cornwall, Devon) A Cornish pasty.oghiAn Armenian spirit distilled from fruits or berries.ogin(UK, chiefly nautical and navy) A large body of water including the sea or the ocean.ogle(transitive, intransitive) To stare at (someone or something), especially impertinently, amorously, or covetously.ogre(figuratively) A cruel person.ohel(Judaism) A structure erected over the grave of a great and righteous person.ohiaEither of two flowering trees of the myrtle family, especiallyoilyCovered with or containing oil.oinkRepresenting the grunting sound made by a pig.oint(now rare, poetic) To anoint.oipe(historical) An Ancient Egyptian dry measure of volume equivalent to 4 heqats (about 19.2 litres or 0.54 bushels).ojekA motorcycle taxi in Indonesia.ojhaA sorcerer or folk healer in parts of India and Nepal.okayAlternative spelling of OK.okehDated form of OK.oker(now chiefly dialectal) Interest on money; usury; increase.okeyA Turkish game in which players attempt to collect certain groups of tiles.okie(informal) Alternative form of OK.okka(historical units of measure) Alternative form of oka.okraThe edible immature mucilaginous seed pod (properly, capsule) of the Abelmoschus esculentus.okroObsolete spelling of okra.okry(Southern US vernacular) Alternative form of okra.okta(meteorology) One eighth of the total area of the celestial dome; used as a measure of cloudiness (one okta means that one eighth of the sky is obscured, two oktas that one quarter is obscured, and so on).okwaObsolete spelling of okra.olamAlternative form of ollamholaypalm leaves, prepared for being written upon with a steel-tipped stylusoldeArchaic spelling of old.olds(UK, slang) One's parents.oldyAlternative spelling of oldie.olehA Jew who has recently made aliyah to Israel; an immigrant to Israel.oleo(US) The various fats and oils that go into the making of margarine.olid(rare) evil-smelling; fetid.olimplural of oleholioA rich, thick, Spanish stew consisting of meat and vegetables.ollaA cooking-pot or earthenware jar used in Spain and Spanish-speaking countries.olpeOriginally, a leather flask or vessel for oils or liquids; afterward, an earthenware vase or pitcher without a spout.omadAlternative letter-case form of OMAD (“one meal a day”).omaoMyadestes obscurus, the Hawaiian thrush.ombuPhytolacca dioica, a massive spreading evergreen tree native to the pampas of South America.omeeAlternative spelling of omi (“man”).omenA thing of prophetic significance.omerA vessel of one omer.omic(biology) Of or pertaining to an ome or omics.omit(transitive) To leave out or exclude.omni(informal, veganism) A person or animal who is not vegan; one with no particular dietary restrictions.omulAny of the salmon-like fish of species Coregonus migratorius (syn. Coregonus autumnalis migratorius), native to Lake Baikal in Siberiaonce(frequency) One and only one time.onctAlternative form of oncet.onde(UK dialectal, Northern England, Scotland) breathoneg(Judaism) A casual festive gathering on Friday night after the first Shabbat meal, usually involving food, singing, dancing, and casual Torah study, fulfilling the mitzvah of enjoying Shabbat.oner(informal, idiomatic) An extraordinary individual.onlyAlone in a category.onna(colloquial) On the.onosSynonym of epinetron (“Attic pottery item”).onryPronunciation spelling of ornery, representing Southern United States English.onst(obsolete, dialect) onceontoArriving upon or on top of (speaking of a physical or metaphorical movement).onusA legal obligation.onyx(mineralogy) A banded variety of chalcedony, a cryptocrystalline form of quartz.onza(cryptozoology) A cryptid in Mexican folklore said to be similar to a cougar or jaguarundi but especially aggressive.ooaaAny member of the extinct species †Moho braccatus of oo birds of Hawaii.oochTo move or slide (oneself or someone, or something) by a small amount.oofy(British, slang, dated) Having lots of money rich, wealthy.ooid(geology) A small calcium carbonate- or iron-coated grain found on the seafloor.oojaAlternative form of oojah (“thing whose name is unknown”).oomfAlternative form of oomph.oont(British India, Australia, colloquial) A camel.ooohElongated form of ooh.oops(colloquial) Acknowledging a mistake.oordArchaic form of urad.oose(Scotland) Fluff, particularly from a textile source such as cotton or wool.oosyArchaic form of oozy.oozeTanning liquor, an aqueous extract of vegetable matter (tanbark, sumac, etc.) in a tanning vat used to tan leather.oozyOf or pertaining to the quality of something that oozes.opahAny of various large, colourful, deep-bodied pelagic fish of the family Lamprididae.opalThe colour of opal: any shade of blue with bright flecks of other colours, such as white, yellow, and red.opedsimple past and past participle of opeopen(usually not comparable) Physically unobstructed, uncovered, etc.oper(Internet) A network operator on IRC.opesthird-person singular simple present indicative of opeopiaAlternative form of hupia.oppa(manhwa, women's speech) An affectionate term of address for an older brother or somewhat older man.oppo(countable, UK, slang) A friend, associate or colleague.opry(Appalachia) Opera.optsthird-person singular simple present indicative of optopus(music) A work of music or set of works with a specified rank in an ordering of a composer's complete published works.orad(anatomy) Located towards the oral opening (the mouth).oral(relational) Relating to the mouth.orbeObsolete spelling of orb.orby(obsolete) having characteristics of an orborcaA sea mammal (Orcinus orca) related to dolphins and porpoises, commonly called the killer whale.orchAbbreviation of orchestra.orda(historical) A political and military organizational structure used by Turkic and Mongol peoples, sometimes referred to as a horde.ordeAlternative form of ord.ordo(music) A musical phrase constructed from one or more statements of one modal pattern and ending in a rest.orduAlternative form of orda.oreoAlternative letter-case form of Oreo.orfeA fish, the ide, Leuciscus idus.orge(intransitive) To indulge in riotous jollity.orgo(informal) Organic.orgyA gathering of people to engage in group sex.origAbbreviation of original.orle(heraldry) A bordure that runs around the outline of a shield without touching the edge.orlo(archaic) A Spanish wind instrument, possibly a crumhorn.orra(now Scotland) Superfluous; odd, unmatched, left over.orse(law, British) otherwise.oryxAny of several antelopes, of the genus Oryx, native to Africa, which have long, straight hornsorzoA form of pasta the size and shape of grains of rice or barley; often used in soups.oses(colloquial) The various sugars ending in -ose, such as sucrose, lactose, glucose, and fructose.oshaA perennial herb of species Ligusticum porteri, found in parts of the Rocky Mountains and northern New Mexico.otay(nonstandard, childish or feminine) Alternative form of okay.otbdAbbreviation of outbound.otic(anatomy) Of, relating/pertaining to, or located near the ear.otohAlternative letter-case form of OTOH.otoy(rare) new cocoyamotsu(linguistics) In Old Japanese, one of two sets of vowels of uncertain pronunciation which fell together in modern Japanese.otta(India, obsolete) Flour.ottoAlternative form of attar.ouchAn expression of one's own physical pain.ouerEarly Modern spelling of over.ouid(Internet slang) Filter-avoidance spelling of weed (“marijuana”).ould(colloquial, Ireland) Pronunciation spelling of old.ouleObsolete spelling of owl.ouma(South Africa) A grandmother.ouns(archaic, dialectal) Wounds, especially the wounds of Christ on the cross.ouphAlternative form of awf (“elf”).oursThat or those belonging to us.ouseObsolete spelling of ooze.oust(transitive) To expel; to remove.outa(South Africa) An old black man.outyAlternative spelling of outie.ouze(UK dialectal) Mud.ouzo(uncountable) An anise-flavoured aperitif, originating in Greece.ovalAn elongated round shape resembling an ellipse or an egg.ovenA chamber used for baking or heating.overFinished; ended; concluded.ovhdAbbreviation of overhead.ovoo(religion) A shamanistic cairn found in Mongolia, usually made from rocks or wood and found on or around mountains.ovum(cytology, embryology) The female gamete in animals; the egg cell.owchObsolete form of ouch (“a jewel”).owedsimple past and past participle of oweowel(law, obsolete) equalowerA person who owes something, especially money.owesthird-person singular simple present indicative of oweowldEye dialect spelling of old.owlyResembling or characteristic of an owl.owneObsolete spelling of own.ownsthird-person singular simple present indicative of ownowreObsolete form of hour.oxea(zoology, of sponges (Porifera)) a monoaxial spicule which is pointed at both endsoxerA type of horse jump with two rails that may be set even or uneven.oxia(orthography and typography) An Ancient Greek pitch-marking diacritic: ⟨ ´ ⟩; written atop vowels, it denotes high pitch on short vowels, and rising pitch on long vowels and diphthongs.oxicContaining oxygen.oxid(chemistry) Archaic form of oxide.oximDated form of oxime.oxon(organic chemistry) Any organic compound derived from another in which a phosphorus-sulfur bond in the parent has been replaced by a phosphorus-oxygen bond in the derivative.oxydObsolete spelling of oxide.oxyl(chemistry) A compound or radical bound to an oxygen by a single bondoyer(law, archaic) A hearing in a civil case which is based on the content of a document, in which the plaintiff is required to produce the document.oyezHear ye. Attend. (Called by public criers or in court usually three times to secure silence and/or attentiveness).oylyObsolete spelling of oily.oyraA subdenomination of the Faroese króna.

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