/ Dictionary / Index M misuse: Meaning and Definition of Find definitions for: mis•use Pronunciation: (n.mis-ys'v.mis-yz'), [key] — n., v., -used, -us•ing. —n. wrong or improper use; misapplication. bad or abusive treatment. —v.t. to use wrongly or improperly; misapply. to treat badly or abusively; maltreat. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: misuse (Thesaurus) misusage misuser Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language