- gone out of style or fashion; outmoded; obsolete: out-of-date fashions; out-of-date ideas.
adjective, adverb (out-of-date when prenominal)
- no longer valid, current, or fashionable; outmoded
1Too old to be used, past the point of expiration, as in This milk is out of date. [Early 1600s] 2Old-fashioned, no longer in style, as in Dean has three suits but they’re all out of date. [Early 1800s]