The quality of being genuine or not corrupted from the original, of having the same origin (or attribution, commitment, intention, etc.) as claimed.

Third-person singular simple present indicative form 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

past participle of authenticate

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.

something which validates or confirms the authenticity of something / (computing) proof of the identity of a user logging on to some network / a hallmark or assay-mark on a piece of metalwork