/ Dictionary / Index O opinionative: Meaning and Definition of Find definitions for: o•pin•ion•a•tive Pronunciation: (u-pin'yu-nā"tiv), [key] — adj. of, pertaining to, or of the nature of opinion. opinionated. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: opinionative (Thesaurus) opinionated opinioned Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language