/ Dictionary / Index M malefactor: Meaning and Definition of Find definitions for: mal•e•fac•tor Pronunciation: (mal'u-fak"tur), [key] — n. a person who violates the law; criminal. a person who does harm or evil, esp. toward another. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: malefactor (Thesaurus) malefaction malefactress Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language