/ Dictionary / Index M militate: Meaning and Definition of Find definitions for: mil•i•tate Pronunciation: (mil'i-tāt"), [key] — -tat•ed, -tat•ing. to have a substantial effect; weigh heavily: His prison record militated against him. to be a soldier. to fight for a belief. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: militate (Thesaurus) military science militia Related Content Daily Word Quiz: modify Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language