10 letter adjectives that start with O

We have listed 147 10-letter adjectives that start with O for you in this WordMom word list. All these 10-letter adjectives starting with O were verified by specialists in the English language.

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  • obligatory
  • obliterate
  • obtainable
  • obsequious
  • observable
  • obstructed
  • oblongness
  • objectless
  • obsidional
  • oblongatal
  • obloquious
  • objectable
  • occasional
  • occidental
  • oculomotor
  • oceangoing
  • octangular
  • octamerous
  • octandrian
  • octavalent
  • octodecimo
  • octogenary
  • octogynous
  • ochraceous
  • octahedral
  • octandrous
  • octogynian
  • oculonasal
  • octagynous
  • odontalgic
  • odometrous
  • oesophagus
  • oedematous
  • offenseful
  • offensible
  • oleaginous
  • oligarchic
  • oleophilic
  • olivaceous
  • oleiferous
  • oleraceous
  • oligarchal
  • oleophobic
  • oligochete
  • oligomyold
  • omnipotent
  • omniscient
  • omnivorous
  • omniferous
  • omnigenous
  • omniparous
  • omnivagant
  • omosternal
  • omiletical
  • omniscious
  • optimistic
  • ophthalmic
  • opalescent
  • oppressive
  • openhanded
  • operculate
  • oppositive
  • opinionate
  • ophiologic
  • oppilative
  • opposeless
  • opiniaster
  • operatical
  • opiniative
  • ophiurioid
  • orthogonal
  • orientated
  • orthopedic
  • orchestral
  • ornamental
  • oratorical
  • organismic
  • orbiculate
  • organismal
  • orographic
  • orological
  • orchestric
  • orchideous
  • ordainable
  • ordovician
  • originable
  • orsellinic
  • orthotomic
  • orthodoxal
  • ordinative
  • oratorious
  • ostensible
  • ossiferous
  • osculatory
  • osteogenic
  • ossiculate
  • ossivorous
  • osteologic
  • otherguess
  • otological
  • otherguise
  • otocranial
  • otacoustic
  • otoscopeic
  • outlandish
  • outrageous
  • outclassed
  • outflowing
  • overactive
  • overheated
  • overmodest
  • overweight
  • overriding
  • overpriced
  • overturned
  • overstated
  • overloaded
  • overlooked
  • overhanded
  • overstrung
  • overgreedy
  • overcoming
  • overvalued
  • overworked
  • overground
  • overruling
  • overlavish
  • overthwart
  • overpotent
  • overstrict
  • overprompt
  • overmellow
  • overmickle
  • overwasted
  • overcostly
  • overbarren
  • overbattle
  • overrigged
  • overfierce
  • oxidizable
  • oxybenzoic
  • oxybutyric
  • oxycalcium
  • oxycaproic
  • oxychloric
  • oxidulated
  • oxytonical

10 letter adjectives that start with