/ Dictionary / Index M muchness: Meaning and Definition of Find definitions for: much•ness Pronunciation: (much'nis), [key] — n. Archaic. greatness, as in quantity, measure, or degree. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: muchness (Thesaurus) Much Ado About Nothing* muci- Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language