/ Dictionary / Index M manyfold: Meaning and Definition of Find definitions for: man•y•fold Pronunciation: (men'ē-fōld'), [key] — adv. by many times; by multiples: The state's highway expenses have increased manyfold in the past decade. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. man-year many-one Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language