/ Dictionary / Index M mutually exclusive: Meaning and Definition of Find definitions for: mu'tually exclu'sive Pronunciation: [key] of or pertaining to a situation involving two or more events, possibilities, etc., in which the occurrence of one precludes the occurrence of the other: mutually exclusive plans of action. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mutualize mutual savings bank Related Content Daily Word Quiz: voracious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language