/ Dictionary / Index O outsit: Meaning and Definition of Find definitions for: out•sit Pronunciation: (out"sit'), [key] — -sat, -sit•ting. to sit longer than; outwait: He was determined to outsit his rival. to sit beyond the time of: We realized we were outsitting our welcome. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. outsing outsize Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language