/ Dictionary / Index M mischievous: Meaning and Definition of Find definitions for: mis•chie•vous Pronunciation: (mis'chu-vus), [key] — adj. maliciously or playfully annoying. causing annoyance, harm, or trouble. roguishly or slyly teasing, as a glance. harmful or injurious. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mischievous (Thesaurus) mischief night misch metal Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language