AUTHENTICATE definition: 1. to prove that something is real, true, or what people say it is: 2. to prove, especially using…. Learn more.

confirm, corroborate, substantiate, verify, authenticate, validate mean to attest to the truth or validity of something. confirm implies the removing of doubts by an authoritative statement or indisputable fact.

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

If you authenticate something, you prove or confirm that it is true. Unfortunately, the map that might have authenticated the tale was lost in Canada. [VERB noun] There have now been well authenticated …

Definition of authenticate verb in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

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

Jan 14, 2026 · authenticate (third-person singular simple present authenticates, present participle authenticating, simple past and past participle authenticated) (transitive) To render authentic; to give …

Experts authenticated the painting. The signature has been authenticated.

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 meaning: 1. to prove that something is real, true, or what people say it is: 2. to prove, especially using…. Learn more.