Adjectives Starting with O – 903 Words to Boost Your Vocabulary

3 min read
Adjectives Starting with O – 903 Words to Boost Your Vocabulary

Adjectives are descriptive words that help us add an extra touch of excitement, intensity, and cohesiveness to our sentences. Our nouns and pronouns would sound rather plain and dull on their own if we don’t add descriptive words for them.

Besides, readers wouldn’t find anything enticing in a piece of writing and would perhaps not want to read at all. This is why we rely heavily on the use of adjectives to improve the quality, structure, and information level of our sentences.

We know grammar concepts can confuse anyone. They can be really tricky at times but it helps to have extra resources. We offer book video explanations and common core English resources to help make language concepts easier for children to understand.

o words to describe someone

Adjectives – What they are

There are many uses of adjectives, including describing how many or how much of the nouns or pronouns you’re describing. They also help you discuss the kind of things you want, see, or have experienced, etc. For example:

Place two white chairs on the stage, please.

Here you can see that two and white serve as modifying adjectives in the sentences. We also have other kinds of adjectives, including possessive adjectives, demonstrative adjectives, and number adjectives. This helps indicate possessions, demonstrate things and persons, etc. and state the number of nouns and pronouns.

Let’s run a quick quiz below to test your adjective skills.

words starting with o to describe someone
Boost your score Adjectives Starting with O

Quiz

Choose the adjective from the given options:










List of Adjectives with O

OafishOffensiveOnomasticOrphanedOverdue
OakOff-fieldOnomatopoeicOrphicOvereager
OakenOff-guardOn-roadOrthodonticOvereducated
ObdurantOffhandOnrushingOrthodoxOver-educated
ObdurateOff-handOn-sceneOrthoepicOver-elaborate
ObedibleOfficialOnscreenOrthogeneticOveremotional
ObedientOfficiaryOn-screenOrthogenicOveremphatic
ObedientialOfficinalOnshoreOrthognathicOverenthusiastic
ObedtOfficiousOnsideOrthogonalOverexcitable
ObeisantOffishOnsiteOrthogradeOverexcited
ObeisauntOff-keyOn-siteOrthologousOverexerted
ObeseOff-kilterOnstageOrthometricOverexerting
ObfuscatoryOff-limitsOn-stageOrthopedicOverexposed
ObituaryOfflineOn-the-jobOrthopticOverextended
Object-basedOff-lineOn-the-spotOrthorhombicOverfamiliar
ObjectionableOff-peakOnticOrthostaticOverfatigued
ObjectionableOff-pisteOntogeneticOrthotopicOverfed
ObjectionalOff-putOntologicOrthotropicOverflowing
ObjectiveOffputtingOntologicalOsOverfocused
ObjectlessOff-puttingOnwardOscillatingOverfond
Object-orientedOff-roadOnygenaceousOscillatoryOver-fond
ObjectualOff-saleOnymousOscineOverforceful
OblateOffscreenOnyxOscitantOverforested
OblationaryOff-screenOoOsculatingOverforward
ObligateOffshoreOobOsculatoryOverfragrant
ObligatedOffsideOofyOsmobioticOverfraught
ObligationalOffsidesOoliticOsmolarOverfree
ObligatoryOffsiteOozyOsmometricOverfreighted
ObligedOff-siteOpacatingOsmoticOverfrequent
ObligingOffstageOpacifiableOsseousOverfriendly
OblikeOff-streetOpacousOssicularOverfriezed
ObliminOff-targetOpacularOssiculateOverfruitful
ObliqueOff-the-ballOpalescentOssiferousOverfucked
ObliquidOff-the-cuffOpalineOssifiedOverful
ObliteOff-the-pegOpaqueOssomOverfulfilled
ObliterableOff-the-rackOpenOs-specificOverfull
ObliteratedOff-the-recordOpenableOstealOverfurnished
ObliterativeOff-the-shelfOpen-airOstensibleOverfussy
ObliviousOff-the-shoulderOpen-and-shutOstensiveOvergenerous
OblongOff-the-wallOpen-armedOstentatiousOvergreedy
ObnoxiousOff-trackOpen-bookOsteoarthriticOvergrown
ObsceneOff-whiteOpencastOsteogeneticOverhand
ObscurantOft-repeatedOpencutOsteogenicOverhanded
ObscureOgivalOpenedOsteoidOverhasty
ObsequiousOgreishOpen-endedOsteopathicOverhead
ObservableOhmicOpen-eyedOsteoporoticOverheated
ObservantOilyOpen-facedOstialOverhyped
ObservationalOkOpen-handedOstrich-likeOverinclusive
ObservedOkayOpen-heartedOtherOverindebted
ObservingOldOpen-hearthOtherwiseOverintense
ObsessedOldeOpeningOther-worldlyOverinvested
ObsessionalOldenOpen-mindedOticOverinvolved
ObsessiveOlderOpen-mouthedOtoscopicOverionized
ObsignatoryOldestOpen-planOtotoxicOverish
ObsolescentOldfashionedOpensightlyOtterlessOverjealous
ObsoleteOld-fashionedOpensourceOtterlikeOverjittery
ObsoleterOld-growthOpephoroidOtterOverjoyed
Obstacle-riddenOld-hatOperableOutOverjoyous
ObstacularOldishOperantOut of workOverjubilant
ObstetricOldlineOperaticOut-and-outOverjust
ObstetricalOld-lineOperatingOutbackOverkeen
ObstetriciousOld-maidishOperationalOutboardOverladen
ObstetrickOld-schoolOperationalistOutboundOverland
ObstinantOld-timeOperativeOutbredOverlarge
ObstinateOld-worldOpercularOutcastOverlayered
ObstreperousOleOperculateOutclassedOverloaded
ObstructedOleaceousOperculatedOutcomingOverlookable
ObstructiveOleaginousOperoseOutcutOverlooked
ObstruentOleanolicOphidianOutdaciousOverly
ObtainableOlefinicOphioliticOutdateOverlying
ObtrusiveOleicOpiateOutdatedOvermastering
ObtuseOlentOpinionatedOutdoorOvermighty
Obtuse-angledOleochemicalOppilativeOutdoorsyOvermodest
ObverseOleographicOpponentOuterOvermotivated
ObviatingOleophilicOpportuneOutermostOvermuch
ObviousOleophobicOpportunistOutfittedOvermuscled
OccasionalOleoresinousOpportunisticOutflowingOverneat
OccidentalOleoseOpposableOutflungOvernew
OccipitalOleraceousOpposedOutgoingOvernice
OccludedOlfactiveOpposingOutgunnedOvernight
OcclusalOlfactoryOppositeOutjuttingOvernighter
OccluseOligaemicOppositionalOutlandOveroptimistic
OcclusionalOligarchicOppositiveOutlandishOverpessimistic
OcclusiveOligarchicalOppressedOutlawOverplayful
OcculentOligomericOppressionalOutlawedOver-polite
OcculomotorOligopolisticOppressiveOutlinedOverpriced
OccultOligosalineOpprobriousOutlyingOverproof
OcculticOligosemicOpsonicOutmodedOverproud
OccultisticOligosynapticOptativeOutmostOverqualified
OccultiveOligotrichousOpthalmicOut-of-bodyOverraced
OcculturalOligotrophicOpticOut-of-characterOverracked
OccupationalOliguricOpticalOut-of-contextOverrank
OccupiableOlivaryOptimalOut-of-courtOverrash
OccupiedOliveOptimificOut-of-dateOver-rated
OccurrentOlivelikeOptimisticOut-of-orderOverreaching
Ocean-goingOlympianOptimumOut-of-pocketOverreactive
OceanicOlympicOptionalOut-of-printOver-reactive
OceanwardOmakaseOptoelectronicOut-of-serviceOverread
OcellarOmaniOptokineticOut-of-stateOverready
OcellatedOmasalOptomotorOut-of-townOverrefined
OcherOminousOptospintronicOut-of-workOverriding
OchreOmissibleOptothermalOutragedOverripe
OchreousOmissiveOptotypicOutrageousOver-ripe
OchrousOmmatidialOptronicOutrightOversea
OcreateOmnibusOpulentOutshoreOverseas
OctabasicOmnipotentOpuntiaceousOutsideOversensitive
OctacoreOmnipresentOracularOutsizeOver-sensitive
OctacosanoicOmniscientOralOutsizedOverserious
OctacyclicOmnivorousOrangeOutspokenOversewn
OctagonalOmohyoideanOrangeyOutspreadOversexed
OctahedralOmophagicOrangishOutstandingOvershot
OctalOmophagousOrangyOutwardOversimplistic
OctamericOmosternalOratorialOuvrieristOversize
OctangularOmoticOratorianOvalOversized
OctanoicOmphacineOratoricalOvaloidOverslow
OctogenarianOmphaciticOrbicularOvarianOversmoothed
OctogynousOmphalicOrbiculateOvateOversnowed
OctoicOmphalinoidOrbitalOvationOversocialized
OctoidOnOrbitaryOvenproofOversoft
OctolateralOn-airOrbitualOven-proofOversolar
OctolocularOnanisticOrblessOverOversolicitous
OctonaryOn-cameraOrblikeOverabundantOversophisticated
OctonionicOn-campusOrchestralOverachieverOversparred
OctonocularOnce-removedOrchestratedOverachievingOverspecific
OctopaminergicOncogeneticOrcishOveractiveOverspeeding
OctopartiteOncogenicOrdainedOverageOverstated
OctopeanOncogenomicOrdealOveragedOversteered
OctopetalousOncologicOrderableOveraggressiveOverstimulated
OctopianOncologicalOrderedOveralertOverstrung
OctopicOncomingOrderlyOverallOverstuffed
OctopineOneOrdinalOveralledOversubscribed
OctoploidOne-armedOrdinaryOveranxiousOversuspicious
OctopodalOne-dayOrdinateOveraptOvert
OctopodousOne-eighthOrdurousOverarmOver-the-counter
OctopoidOne-eyedOrecticOverattentiveOver-the-top
OctopoidalOne-fifthOregonianOverawedOvertight
OctopolarOne-fourthOrganicOverbankedOvertired
OctosyllabicOne-gallusedOrganismalOverbearingOvertouristed
OctupleOne-halfOrganismicOverblownOvertroubled
OcularOne-handedOrgasmicOverboldOvertrusting
OddOneiricOrgasticOverbookedOverturnable
OddishOne-leggedOrgiasticOverbreathedOverturned
Odds-onOne-ninthOrgulousOverburdenedOveruniform
Odd-toedOne-noteOrientOverbusyOvervaliant
OdicOne-offOrientalOvercarefulOverwater
OdiferousOne-on-oneOrientatedOvercastOverweening
OdinicOne-pieceOrientatingOvercautiousOverweight
OdiousOne-potOrientationalOverchargedOverwhelmed
OdobenineOne-quarterOrientedOvercivilizedOverwhelming
OdometricOnerousOrientingOvercladOverwrought
OdometricalOne-seventhOrigenianOverclaimedOverzealous
OdontoidOne-shotOrigenistOverclearOver-zealous
OdorantOnesidedOrigenisticOvercloseOvid
OdoriferousOne-sidedOriginableOverclothedOviform
OdorlessOne-sixthOriginalOverclutteredOvigerous
OdorousOne-stopOriginaryOvercoachedOviparous
OdourfulOne-tenthOriginativeOvercoatedOvular
OdourlessOne-thirdOriginlessOvercoatlessOvulational
OecumenicOnetimeOrinasalOvercomingOwer
OecumenicalOne-timeOrinocanOvercommittedOwing
OedematousOne-to-oneOrkishOvercomplicatedOwlish
OedipalOne-touchOrnamentalOverconcernedOwn
OenologicalOne-trackOrnateOverconfidentOwned
OenophilicOne-wayOrneryOverconscientiousOwnerless
OestralOngoingOrnithogenicOverconsciousOxalic
OestrogenicOn-goingOrnithologicalOverconsiderateOxblood
OestrousOn-handOrnithophilousOvercountedOxeyed
OffOnionedOrogastricOvercriticalOx-eyed
Off-airOnionlessOrogenicOvercuriousOxonian
Off-baseOnionlikeOrogenitalOverdampedOxyacetic
Off-beamOnionyOrographicOverdelicateOxygenic
OffbeatOniricOrographicalOverdependentOxyntic
Off-bookOnirocriticOrolabialOverdeterminedOxytocic
Off-broadwayOnkusOrolingualOverdevelopedOyster
Off-campusOnlestOrologicalOverdocumentedOysterish
Off-centerOnlieOromucosalOverdominantOysterless
Off-colourOnlineOronasalOverdoneOysterlike
OffdutyOn-lineOroqenOverdopedOystery
OffencelessOnlookingOrosensoryOverdosedOzone-friendly
OffendedOnlyOrosirianOverdramatic 
OffendingOn-offOrotundOverdressed 
adjectives_starting_with_o_903_words_to_

Adjectives Index

Adjectives starting with:
 
U  

Final Thoughts

Adjectives describe nouns and pronouns in a sentence. They’re the words that indicate the attributes, quantity and quality of a noun. If you need help with language, you can find our resources to get the extra practice you need for refining your

In the next article you can know about adjectives beginning with Q.