4-Letter Adjectives Starting with 'O'

Explore 23 verified English 4-letter adjectives starting with 'O', including everyday words like Open, Okay, Oral and Oval. Browse the full alphabetical list below, or review grammatical rules and sentence examples in our adjective grammar guide.

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Starts with OA3 words
oaky
oaty
oary
Starts with OD2 words
odal
odic
Starts with OI1 words
oily
Starts with OK2 words
okay
okie
Starts with OL1 words
olid
Starts with ON2 words
only
onyx
Starts with OO2 words
oozy
oofy
Starts with OP1 words
open
Starts with OR4 words
oral
orby
orad
orra
Starts with OT1 words
otic
Starts with OV2 words
over
oval
Starts with OW1 words
owly
Starts with OX1 words
oxic
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