/ Dictionary / Index O outdated: Meaning and Definition of Find definitions for: out•dat•ed Pronunciation: (out"dā'tid), [key] — adj. no longer in use or fashionable; out-of-date; outmoded; antiquated. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: outdated (Thesaurus) outdate outdistance Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language