9-Letter Words Starting With O and Ending With S

Explore 253 matching words, including oakleaves, oarfishes, oasisless, obfuscous, objectors.

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All 253 Matching Words

oakleavesplural of oakleafoarfishesplural of oarfishoasislessLacking an oasis.obfuscousdark; obscure; shadowyobjectorsplural of objectoroblationsplural of oblationobligantsplural of obligantobligatesthird-person singular simple present indicative of obligateobligatosplural of obligatooblivious(usually with to or of) Lacking awareness; unmindful; unaware, unconscious of.obnoxiousExtremely offensive or unpleasant; very annoying, contemptible, or odious.obsequies(plural only) Funeral rites.observersplural of observerobsidiansplural of obsidianobsidious(rare) besieging; besetting, obsessionalobstaclesplural of obstacleobstructsthird-person singular simple present indicative of obstructobturatesthird-person singular simple present indicative of obturateoccasionsplural of occasionocciduousWestern; occidental.occupantsplural of occupantoccupiersplural of occupieroceanautsplural of oceanautoceanitesplural of oceaniteoceanlessWithout an ocean.ocotillosplural of ocotillooctopodes(rare) plural of octopusoctopusesplural of octopusoctoroonsplural of octoroonoculesicsThe study of eye contact as a form of body language.oddnessesplural of oddnessodiferous(sometimes proscribed) Odoriferous; smellyodometersplural of odometerodortaxis(nematology) The movement of an organism with respect to, usually towards, a volatile airborne chemical.odourlessHaving no odour.oeconomus(ecclesiastical) A married priest (chiefly Orthodox Christian and Uniate usage), as opposed to a hieromonk.oeilladesplural of oeilladeoffendersplural of offenderofferingsplural of offeringofferlessWithout offeroffglidesplural of offglideofficialsplural of officialofficiousOffensively intrusive or interfering in offering advice and services.offprintsplural of offprintoffshootsplural of offshootoftenness(rare) The quality of happening often; frequency.oftwhiles(archaic) Often; oftentimes.oikeiosis(philosophy, ethics) The perception of something as being one's own, or belonging to oneself.oilfieldsplural of oilfieldoilstonesplural of oilstoneointmentsplural of ointmentoioxenous(biology, of a parasite) Having a single species of hostoldstylesplural of oldstyleoldtimersplural of oldtimeroleaceousOf or relating to the plant family Oleaceae.oleandersplural of oleanderoleolysisThe separation of a layer of oil from a mixtureolfacticsThe study of smells and how they are perceived.oligarchsplural of oligarcholigomersplural of oligomerolivelessWithout olives.olivenessThe state or condition of being olive in colour.olympiadsplural of olympiadomelettesplural of omeletteomentitisinflammation of the omentumomissionsplural of omissionomnibusesplural of omnibusomnivoresplural of omnivoreoncogenesplural of oncogeneoncolysisThe breakdown or destruction of a tumour.oncovirusA virus that can cause cancer.oneirosisA form of light hypnosis.onelinersplural of onelineroneliness(obsolete) The state of being one or single.onionlessWithout onions.onlookersplural of onlookeronychinus(obsolete) onyxonychitisSynonym of onychia.onychosis(pathology) Any disease or disorder of the fingernails or toenails.oogenesesplural of oogenesisoogenesis(biology) The formation and development of an oocyte or ovumoogoniumsplural of oogoniumoomphlessLacking oomph (vitality or sex appeal).oomycetesplural of oomyceteoophagousRelating to or exhibiting oophagy.oophorousContaining eggs or ova.oospecies(taxonomy) An ootaxon, equivalent to a species, used to classify fossilised dinosaur eggsoospheresplural of oosphereopacitiesplural of opacityoperaticsexaggerated or overly emotional behaviour; histrionicsoperatorsplural of operatoroperettasplural of operettaophidiansplural of ophidianophidiousArchaic form of ophidian.opiferous(rare) Bringing help; helpful.opiparous(obsolete) Sumptuous, luxurious.opponentsplural of opponentoppositesplural of oppositeoppressesplural of oppressopsimathsplural of opsimathopsonisesthird-person singular simple present indicative of opsoniseopticiansplural of opticianoptimatesplural of optimateoptimisesthird-person singular simple present indicative of optimiseoptimistsplural of optimistoptimizesthird-person singular simple present indicative of optimizeoptronicsoptoelectronicsopulencesplural of opulenceoraculous(now rare) Oracular.oralitiesplural of oralityoratoressAlternative form of oratress.oratoriesplural of oratoryoratoriosplural of oratorioorbitalis(anatomy) A muscle that controls protrusion of the eyeball.orbivirusAny virus of the genus Orbivirus, many of which are carried by ticksordainersplural of ordainerorderingsplural of orderingorderlessDevoid of order or arrangement; chaotic.orderliesplural of orderlyordinatesplural of ordinateordnancesplural of ordnanceorebodiesplural of orebodyorgandiesplural of organdyorganisesthird-person singular simple present indicative of organiseorganismsplural of organismorganistsplural of organistorganizesthird-person singular simple present indicative of organizeorganlessWithout organsorganoidsplural of organoidorgillous(literary, archaic) Alternative spelling of orgulous (“arrogant, haughty, proud”)orientalsplural of orientaloriginalsplural of originalornamentsplural of ornamentorogeniesplural of orogenyorogenous(geology) Of or relating to mountain-building; orogenic.orthiconsplural of orthiconorthotics(medicine) The design, manufacture and installation of orthopedic appliances to support, straighten or improve the function of a body partorzavirusMisspelling of oryzavirus.osculatesthird-person singular simple present indicative of osculateosmanthusAny of several widely distributed evergreen flowering plants, of the genus Osmanthus.osmolysisThe rupture of a cell wall due to excessive osmotic pressureosmotaxis(biology) movement of an organism in an osmotic pressure gradientossuariesplural of ossuaryostentous(obsolete) ostentatiousostiariesplural of ostiaryostiarius(Winchester College) A student office held by a prefect with the duties of keeping order, collecting the vulguses, and ensuring the other students attend class.ostinatosplural of ostinatoostleressA female ostler.ostracodsplural of ostracodostrichesplural of ostrichotherness(uncountable) The quality of being different or distinct.otherwaysOtherwise; by another means; in other respectsotiatricsThe study of diseases of the ear and their treatment.otoscopesplural of otoscopeotterlessWithout otters.oughtness(chiefly philosophy) In ethics, the quality which makes an action dutiful or morally obligatory.ouroboros(mythology) A serpent, dragon or worm that eats its own tail, a representation of the continuous cycle of life and death.ourselves(reflexive) Us; the group including the speaker as the object of a verb or preposition when that group also is the subject.outboundsplural of outboundoutbravesthird-person singular simple present indicative of outbraveoutbreaksplural of outbreakoutbreedsthird-person singular simple present indicative of outbreedoutburstsplural of outburstouternessThe quality of being outer.outfieldsplural of outfieldoutfightsthird-person singular simple present indicative of outfightoutgoingsplural of outgoingoutgroupsplural of outgroupoutguardsplural of outguardouthousesplural of outhouseoutpowersthird-person singular simple present indicative of outpoweroutrenessAlternative form of outréness.outridersplural of outrideroutrushesthird-person singular simple present indicative of outrushoutscoresthird-person singular simple present indicative of outscoreoutshinesthird-person singular simple present indicative of outshineoutsidersplural of outsideroutskirtsThe area surrounding a city or town; suburb.outsmartsthird-person singular simple present indicative of outsmartoutstripsthird-person singular simple present indicative of outstripoutweighsthird-person singular simple present indicative of outweighovariolesplural of ovarioleovarylessLacking ovaries.overbitesplural of overbiteoverbootsplural of overbootovercallsthird-person singular simple present indicative of overcallovercastsplural of overcastoverclassA powerful, privileged social class.overcoatsplural of overcoatovercomesthird-person singular simple present indicative of overcomeovercooksthird-person singular simple present indicative of overcookovercropsthird-person singular simple present indicative of overcropovercross(transitive) to cross over; traverseoverdosesplural of overdoseoverdress(intransitive) To wear too many clothes for a particular occasion.overfillsthird-person singular simple present indicative of overfilloverflowsplural of overflowoverfocusTo focus excessively (on a particular subject to the exclusion of others)overgloss(transitive) To make (paper, etc.) too glossy.overgrossExcessively gross.overgrowsthird-person singular simple present indicative of overgrowoverhangsplural of overhangoverhaulsplural of overhauloverheadsplural of overheadoverhearsthird-person singular simple present indicative of overhearoverheatsthird-person singular simple present indicative of overheatoverhours(dated) Additional hours worked; overtime.overleapsthird-person singular simple present indicative of overleapoverloadsplural of overloadoverlooksthird-person singular simple present indicative of overlookoverlordsplural of overlordoverpiousExcessively pious.overpress(transitive) To bear upon (someone or something) with irresistible force; to crush, to overwhelm.overratesthird-person singular simple present indicative of overrateoverridesthird-person singular simple present indicative of overrideoverrulesthird-person singular simple present indicative of overruleoverseersplural of overseerovershoesplural of overshoeoverskies(science fiction) interplanetary, intergalactic.oversocksplural of oversockoverstaysthird-person singular simple present indicative of overstayoverstepsthird-person singular simple present indicative of overstepovertakesthird-person singular simple present indicative of overtakeovertimesplural of overtimeovertnessThe state of being overt; openness.overtonesplural of overtoneoverturesplural of overtureoverturnsthird-person singular simple present indicative of overturnoverviewsplural of overviewoverwearsthird-person singular simple present indicative of overwearoverworksthird-person singular simple present indicative of overworkoviferousProducing or bearing eggs.ovigenous(biology) that produces ova or eggsovigerouscarrying or bearing eggs.oviparousDepositing eggs that develop and hatch outside the body as a reproductive strategy.ovococcus(microbiology) An ellipsoid-shaped bacteriumovotestesplural of ovotestisovotestis(biology) A gonad with characteristics of both ovaries and testicles. Considered an intersex condition in humans and some other animals.owdaciousPronunciation spelling of audacious.ownednessThe quality of being owned.ownerlessHaving no owner.oxidisersplural of oxidiseroxidizersplural of oxidizeroximetersplural of oximeteroxpeckersplural of oxpeckeroxygenous(obsolete) oxygenicoxymoronsplural of oxymoronoxymorous(rare) Synonym of oxymoronic.oxytocicsplural of oxytocicoxytocinsplural of oxytocinoysterousResembling or relating to oysters.ozonelesswithout ozoneozonizersplural of ozonizer