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

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.

Aug 27, 2025 · authenticate (third-person singular simple present authenticates, present participle authenticating, simple past and past participle authenticated) (transitive) To render authentic; to give …

to establish the authorship or origin of conclusively or unquestionably, chiefly by the techniques of scholarship: to authenticate a painting. to make authoritative or valid.

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.