/ Dictionary / Index M mafioso: Meaning and Definition of Find definitions for: ma•fi•o•so Pronunciation: (mä"fē-ō'sō), [key] — pl. -si sos. a member of a Mafia or of a mafia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mafioso (Thesaurus) mafic maftir* Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language