/ Dictionary / Index M misusage: Meaning and Definition of Find definitions for: mis•us•age Pronunciation: (mis-y'sij, -zij), [key] — n. wrong or improper usage, as of words. bad or abusive treatment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. misunderstood misuse Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language