/ Dictionary / Index M make-or-break: Meaning and Definition of Find definitions for: make-or-break Pronunciation: (māk'ur-brāk'), [key] — adj. either completely successful or utterly disastrous: a make-or-break marketing policy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Makemie makeover Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language