(transitive) To render authentic; to give authority to, by the proof, attestation, or formalities required by law, or sufficient to entitle to credit.

Synonym of authentic.

Third-person singular simple present indicative form of authenticate

past participle of authenticate

present participle of authenticate

plural of authenticity

plural of authentication

One who authenticates. / A feature that shows something to be authentic. / (film, television) A person employed to check the accuracy and realism of a script.

plural of authenticator

Of the same origin as claimed; genuine. / Conforming to reality and therefore worthy of trust, reliance, or belief. / (music, of a Gregorian mode) Having the final as the lowest note of the mode.