/ Dictionary / Index D decided: Meaning and Definition of Find definitions for: de•cid•ed Pronunciation: (di-sī'did), [key] — adj. in no way uncertain or ambiguous; unquestionable; unmistakable: a decided victory. free from hesitation or wavering; resolute; determined: a decided approach to a problem. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: decided (Thesaurus) decide deciding Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language