/ Dictionary / Index D defeat: Meaning and Definition of Find definitions for: de•feat Pronunciation: (di-fēt'), [key] — v.t. to overcome in a contest, election, battle, etc.; prevail over; vanquish: They defeated the enemy. She defeated her brother at tennis. to frustrate; thwart. to eliminate or deprive of something expected: The early returns defeated his hopes of election. to annul. —n. the act of overcoming in a contest: an overwhelming defeat of all opposition. an instance of defeat; setback: He considered his defeat a personal affront. an overthrow or overturning; vanquishment: the defeat of a government. a bringing to naught; frustration: the defeat of all his hopes and dreams. the act or event of being bested; losing: Defeat is not something she abides easily. undoing; destruction; ruin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: defeat (Thesaurus) defeasible defeatism Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language