to attest
verbformal/ɐ.tɨʃ.ˈtaɾ/medium
a·tes·tar
Definition
To declare or confirm the truth of something, usually in an official or written manner; to certify, to bear witness.
The official will attest the validity of the signature on the certificate.
His success attests to his hard work and dedication.
Common collocations
to attest to the truthto attest a facta document attesting
Etymology
Do latim 'testari' (testemunhar, fazer testamento).