/ Dictionary / Index M maddest: Meaning and Definition of Find definitions for: mad•dest Pronunciation: (mad'ist), [key] — adj. superlative of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: maddest (Thesaurus) madder lake madding Related Content Daily Word Quiz: punctual Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language