v. affirm, confirm, testify to, attest (to), bear witness to, vouch for, corroborate, support, substantiate, clinch or clench, prove, demonstrate, show, bear out, authenticate, validate, certify, guarantee, back up, warrant: Can you verify the accuracy of his testimony?
VERIFY
Meaning of VERIFY in English
Oxford thesaurus English vocab. Английский словарь Оксфорд тезаурус. 2012