Adjectives That Start with OCT

Browse 51 English adjectives starting with the prefix OCT, including Octogenarian, Octagonal, Octal, Octavo, Octahedral, Octuple and Octillion. Sort these describing words and descriptive modifiers by letter count for character descriptions, creative writing, and compliment lists, or consult our adjective grammar guide.

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octagonal
octal
octavo
octahedral
octameter
octangular
octaval
octastyle
octan
octantal
octadic
octapodic
octachordal
octandrous
octamerous
octanedioic
octastichous
octandrian
octastrophic
octavalent
octennial
octillion
octillionth
octingentenary
octingenary
octogenarian
octoroon
octopod
octosyllabic
octopoid
octoploid
octonary
octosyllable
octodecimo
octopodan
octodecillion
octostyle
octogenary
octopodous
octocentenary
octosepalous
octonocular
octostichous
octonarian
octopetalous
octogynous
octofid
octuple
octuplex
octuplicate
octyl

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