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authenticate

[aw-then-ti-keyt]
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verb (used with object), au·then·ti·cat·ed, au·then·ti·cat·ing.
  1. to establish as genuine.
  2. to establish the authorship or origin of conclusively or unquestionably, chiefly by the techniques of scholarship: to authenticate a painting.
  3. to make authoritative or valid.
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Origin of authenticate

1565–75; < Medieval Latin authenticātus made authentic (past participle of authenticāre). See authentic, -ate1
Related formsau·then·ti·cat·a·ble, adjectiveau·then·ti·ca·tion, nounnon·au·then·ti·cat·ed, adjectivenon·au·then·ti·ca·tion, nounre·au·then·ti·cate, verb (used with object), re·au·then·ti·cat·ed, re·au·then·ti·cat·ing.re·au·then·ti·ca·tion, nounself-au·then·ti·cat·ing, adjectiveun·au·then·ti·cat·ed, adjectivewell-au·then·ti·cat·ed, adjective

Synonyms for authenticate

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for authenticate

attest, verify, validate, substantiate, corroborate, authorize, prove, certify, confirm, justify, vouch, endorse, accredit, warrant, guarantee

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British Dictionary definitions for authenticate

authenticate

verb (tr)
  1. to establish as genuine or valid
  2. to give authority or legal validity to
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Derived Formsauthentication, nounauthenticator, noun
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 authenticate

v.

"verify, establish the credibility of," 1650s, from Medieval Latin authenticatus, past participle of authenticare, from authenticus (see authentic). Related: Authenticated; authenticating.

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Online Etymology Dictionary, © 2010 Douglas Harper