/ Dictionary / Index O outperform: Meaning and Definition of Find definitions for: out•per•form Pronunciation: (out"pur-fôrm'), [key] — v.t. to surpass in excellence of performance; do better than: a new engine that outperforms the competition; a stock that outperformed all others. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: outperform (Thesaurus) outpatient outplace 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