/ Dictionary / Index M mandator: Meaning and Definition of Find definitions for: man•da•tor Pronunciation: (man-dā'tur), [key] — n. a person who gives a mandate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mandator (Thesaurus) mandate mandatory Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language