The meaning of AUTHENTICATE is to prove or serve to prove to be real, true, or genuine. How to use authenticate in a sentence. Synonym Discussion of Authenticate.

AUTHENTICATED definition: 1. past simple and past participle of authenticate 2. to prove that something is real, true, or…. Learn more.

If you authenticate something, you state officially that it is genuine after examining it. He says he'll have no problem authenticating the stamp. [VERB noun] All the antiques have been authenticated and …

AUTHENTICATE definition: to establish as genuine. See examples of authenticate used in a sentence.

to prove that something is real, true or what somebody claims it is. authenticate something The letter has been authenticated by handwriting experts. authenticate something as something Experts have …

When you authenticate something, you establish that it’s the real thing. If you authenticate a painting, for example, you’re sure that it's an original work, not a copy.

Authenticate definition: To establish the authenticity of; prove genuine.

To establish the authenticity of; prove genuine: a specialist who authenticated the antique samovar. See Synonyms at confirm. au·then′ti·ca′tion n. au·then′ti·ca′tor n. American Heritage® Dictionary of the …

authenticate meaning, definition, what is authenticate: to prove that something is true or real: Learn more.

Dec 14, 2025 · authenticate (third-person singular simple present authenticates, present participle authenticating, simple past and past participle authenticated) (transitive) To render authentic; to give …