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Authentic etymology

English

English word authentic comes from Ancient Greek αὐθέντης, and later Latin authenticus (Original, genuine, authentic.)

Detailed word origin of authentic

Dictionary entry Language Definition
αὐθέντης Ancient Greek (grc)
αὐθεντικός Ancient Greek (grc)
authenticus Latin (lat) Original, genuine, authentic.
autentique Old French (fro)
authentik Middle English (enm)
authentic English (en) (music, of a Gregorian mode) Having the final as the lowest note of the mode.. (obsolete) authoritative. Conforming to reality and therefore worthy of trust, reliance, or belief.. Of the same origin as claimed; genuine.