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.

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 …

Apr 6, 2026 · authenticate (third-person singular simple present authenticates, present participle authenticating, simple past and past participle authenticated) (transitive) To render authentic; to give …

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

authenticate (ɔːˈθɛntɪˌkeɪt) vb (tr) 1. to establish as genuine or valid 2. to give authority or legal validity to

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.

authenticate, v. meanings, etymology, pronunciation and more in the Oxford English Dictionary

authenticate definition: prove something is real or genuine. Check meanings, examples, usage tips, pronunciation, domains, and related words. Discover expressions like "re-authenticate".