/ Dictionary / Index O optimistic: Meaning and Definition of Find definitions for: op•ti•mis•tic Pronunciation: (op"tu-mis'tik), [key] — adj. disposed to take a favorable view of events or conditions and to expect the most favorable outcome. reflecting optimism: an optimistic plan. of or pertaining to optimism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: optimistic (Thesaurus) optimist optimization Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language