Thesaurus

authenticate

verb

Synonyms and Antonyms of AUTHENTICATE

1
to declare (something) to be true or genuine <a jeweler authenticated the diamond as real>
Synonyms attest, authenticate, avouch, testify (to), vouch (for), witness
2
to give evidence or testimony to the truth or factualness of <we require more than simply your word to authenticate this story>
Related Words avouch, back (up), testify (to), vouch (for), witness; guarantee, warrant; affirm, assert, aver, avow, declare, profess; demonstrate, document, establish, prove, reinforce (also reenforce)
Antonyms disprove, rebut, refute

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