/ Dictionary / Index M mug's game: Meaning and Definition of Find definitions for: mug's' game" Pronunciation: [key] a foolish, useless, or ill-advised venture. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mugho pine mug shot Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language