/ Dictionary / Index M malfeasance: Meaning and Definition of Find definitions for: mal•fea•sance Pronunciation: (mal-fē'zuns), [key] — n. Law. the performance by a public official of an act that is legally unjustified, harmful, or contrary to law; wrongdoing (used esp. of an act in violation of a public trust). Cf.(def. 2), Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: malfeasance (Thesaurus) malevolent malformation 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