/ Dictionary / Index O outmuscle: Meaning and Definition of Find definitions for: out•mus•cle Pronunciation: (out"mus'ul), [key] — -cled, -cling. to get the better of or dominate by virtue of superior strength or force. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. outmost outnumber Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language