/ Dictionary / Index O oust: Meaning and Definition of Find definitions for: oust Pronunciation: (oust), [key] — v.t. to expel or remove from a place or position occupied: The bouncer ousted the drunk; to oust the Prime Minister in the next election. to eject or evict; dispossess. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: oust (Thesaurus) Ouspensky ouster Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language