/ Dictionary / Index O overmatter: Meaning and Definition of Find definitions for: o•ver•mat•ter Pronunciation: (ō'vur-mat"ur), [key] — n. Print. overset (def. 6). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. overmatch overmeasure Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language