/ Dictionary / Index O outlast: Meaning and Definition of Find definitions for: out•last Pronunciation: (out"last', -läst'), [key] — v.t. to endure or last longer than: The pyramids outlasted the civilization that built them. to live longer than; outlive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: outlast (Thesaurus) outlandish outlaw Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language