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outdated

[out-dey-tid]
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adjective
  1. no longer in use or fashionable; out-of-date; outmoded; antiquated.

Origin of outdated

First recorded in 1610–20; out- + date1 + -ed2

outdate

[out-deyt]
verb (used with object), out·dat·ed, out·dat·ing.
  1. to put out of date; make antiquated or obsolete: The advent of the steamship outdated sailing ships as commercial carriers.

Origin of outdate

First recorded in 1640–50; probably back formation from outdated
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for outdated

outdated

adjective
  1. old-fashioned or obsolete

outdate

verb
  1. (tr) (of something new) to cause (something else) to become old-fashioned or obsolete
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for outdated

adj.

also out-dated, 1610s, "grown obsolete," from out + past participle of date (v.1). Out-of-date is attested from 1610s.

Online Etymology Dictionary, © 2010 Douglas Harper

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