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Synonyms and Antonyms of attest

1 to declare (something) to be true or genuine
  • the appraiser attests that the lamp is indeed an original Tiffany
Synonyms of attest

authenticate, avouch, certify, testify (to), vouch (for), witness
Words Related to attest

guarantee, warrant

affirm, assert, aver, avow, profess, vow
2 to make a solemn declaration under oath for the purpose of establishing a fact
  • an eyewitness who will attest to my innocence
Synonyms of attest

depose, swear, testify, witness
Words Related to attest

verify

vouch

promise, vow
Phrases Synonymous with attest

bear witness
3 to give evidence or testimony to the truth or factualness of
  • I'll attest that she was at the party
Synonyms of attest

argue, authenticate, bear out, certify, confirm, corroborate, substantiate, support, validate, verify, vindicate
Words Related to attest

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 attest

contradict, gainsay

deny, disavow, disclaim

challenge, contest, dispute, question
Antonyms of attest

disprove, rebut, refute

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