authenticate

Fetched 2026-10-28 (live).

Synonyms: authenticity, authenticator, authenticated, authentical, authenticates, authenticode, reauthenticate

Antonyms: authenticity, authenticator, authenticated, authentical, authenticates, authenticode, reauthenticate

Related words from Datamuse; suggestions, not definitions.

Verb

1. To render authentic; to give authority to, by the proof, attestation, or formalities required by law, or sufficient to entitle to credit.
2. To prove authentic; to determine as real and true.
   • He didn’t manage to authenticate the portrait: it’s probably a fake.
   • The server could not authenticate the request.

Adjective

1. Synonym of authentic.

Source: Wiktionary · CC BY-SA 3.0 (Wiktionary) · cached copy, not a rewrite.