/ Dictionary / Index M misdemeanor: Meaning and Definition of Find definitions for: mis•de•mean•or Pronunciation: (mis"di-mē'nur), [key] — n. a criminal offense defined as less serious than a felony. an instance of misbehavior; misdeed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: misdemeanor (Thesaurus) misdemeanant misderive Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language