9 letter adjectives that start with O

We have listed 161 9-letter adjectives that start with O for you in this WordMom word list. All these 9-letter adjectives starting with O were verified by specialists in the English language.

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  • obligated
  • obstetric
  • obstinate
  • oblivious
  • obnoxious
  • obtrusive
  • obfuscate
  • obviating
  • objective
  • observant
  • observing
  • obsessive
  • obstruent
  • obturator
  • obligable
  • obconical
  • obcordate
  • obeliscal
  • obsequent
  • obvoluted
  • oblongish
  • obomegoid
  • obumbrant
  • obversant
  • octagonal
  • occlusive
  • occurrent
  • ocellated
  • occipital
  • occludent
  • octastyle
  • octennial
  • octostyle
  • oculiform
  • occiduous
  • ochreated
  • octaedral
  • octogonal
  • odourless
  • odorating
  • oecumenic
  • oenanthic
  • offending
  • offensive
  • officious
  • offhanded
  • offerable
  • officiary
  • officinal
  • olfactory
  • oleaceous
  • olfactive
  • oligocene
  • olecranal
  • olivelike
  • olivaster
  • oligistic
  • omissible
  • omophagic
  • omphacine
  • onomastic
  • oncologic
  • ontogenic
  • ontologic
  • onomantic
  • oological
  • operating
  • operative
  • opportune
  • oppressed
  • opposable
  • opinioned
  • oppugnant
  • opthalmic
  • opinative
  • opiniated
  • opiniatre
  • optigraph
  • opiparous
  • ophidioid
  • ophidious
  • oparcular
  • opiferous
  • orbicular
  • organized
  • orgiastic
  • orienting
  • organised
  • orthoptic
  • originary
  • organical
  • orthotone
  • oraculous
  • orwellian
  • orderable
  • orderless
  • orthoepic
  • oratorial
  • oratorian
  • orgillous
  • ordonnant
  • originant
  • organific
  • orchidean
  • ordinable
  • orbituary
  • ostensive
  • ossicular
  • ossifying
  • ostentive
  • ostentous
  • ostracoid
  • otherwise
  • otolithic
  • outnumber
  • outspoken
  • outspread
  • outermost
  • outfitted
  • outdoorsy
  • outrigged
  • outlinear
  • oviparous
  • overhasty
  • overlarge
  • overlying
  • overnight
  • oversized
  • overeager
  • overjoyed
  • overladen
  • oversexed
  • overgrown
  • overblown
  • overproud
  • overbuilt
  • overrated
  • overtired
  • overlusty
  • overproof
  • overlight
  • overrigid
  • overgreat
  • oviferous
  • overhappy
  • overdight
  • overhardy
  • overheavy
  • overready
  • overmoist
  • ovaliform
  • overawful
  • overgross
  • ovigerons
  • ownerless
  • oxidative
  • oxygenous
  • oxygonial
  • oxyacetic
  • oxybromic
  • oxyphenic

9 letter adjectives that start with