Thesaurus

authenticate

verb

Synonyms and Antonyms of authenticate

  1. 1 to declare (something) to be true or genuine a jeweler authenticated the diamond as real Synonyms attest, certify, avouch, testify (to), vouch (for), witnessRelated Words guarantee, warrant; affirm, assert, aver, avow, profess, vow

  2. 2 to give evidence or testimony to the truth or factualness of we require more than simply your word to authenticate this story Synonyms argue, attest, confirm, bear out, certify, corroborate, substantiate, support, validate, verify, vindicateRelated Words avouch, back (up), testify (to), vouch (for), witness; guarantee, warrant; affirm, assert, aver, avow, declare, profess; demonstrate, document, establish, prove, reinforce (also reenforce)Near Antonyms contradict, gainsay; deny, disavow, disclaim; challenge, contest, dispute, questionAntonyms disprove, rebut, refute



Seen and Heard

What made you want to look up authenticate? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!