authenticate | Definition of authenticate

Synonyms and Antonyms of authenticate

1 to declare (something) to be true or genuine

a jeweler authenticated the diamond as real

Synonyms of authenticate

attest, avouch, certify, testify (to), vouch (for), witness

Words Related to authenticate

guarantee, warrant

affirm, assert, aver, avow, profess, vow

2 to give evidence or testimony to the truth or factualness of

we require more than simply your word to authenticate this story

Synonyms of authenticate

argue, attest, bear out, certify, confirm, corroborate, substantiate, support, validate, verify, vindicate

Words Related to authenticate

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 of authenticate

contradict, gainsay

deny, disavow, disclaim

challenge, contest, dispute, question

Antonyms of authenticate

disprove, rebut, refute