[ aw-then-ti-keyt ]
/ ɔˈθɛn tɪˌkeɪt /

verb (used with object), au·then·ti·cat·ed, au·then·ti·cat·ing.

to establish as genuine.
to establish the authorship or origin of conclusively or unquestionably, chiefly by the techniques of scholarship: to authenticate a painting.
to make authoritative or valid.

Origin of authenticate

1565–75; < Medieval Latin authenticātus made authentic (past participle of authenticāre). See authentic, -ate1

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for authenticate

British Dictionary definitions for authenticate


/ (ɔːˈθɛntɪˌkeɪt) /

verb (tr)

to establish as genuine or valid
to give authority or legal validity to

Derived Forms

authentication, 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