authenticate.
To render authentic; to give authority to, by the proof, attestation, or formalities required by law, or sufficient to entitle to credit.
Meaning & usage
To render authentic; to give authority to, by the proof, attestation, or formalities required by law, or sufficient to entitle to credit.
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.
Where this word comes from
Borrowed from Medieval Latin authenticō. By surface analysis, authentic + -ate (verb-forming suffix).
Synonym of authentic.
Where this word comes from
Etymology tree English authentic Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-tós Proto-Indo-European *-eh₂tos Proto-Italic *-ātos Latin -ātuslbor. English -ate English authenticate From authentic + -ate (adjective-forming suffix).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.