Etymology

authenticative

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Today it means: Of or pertaining to, or creating a word form indicating a state of authenticity or originality. Full definition →

English authenticate ← Medieval Latin authenticō
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The story

  1. Medieval Latinauthenticō
  2. Englishauthenticate
  3. English todayauthenticative

From authenticate + -ive.

Etymology from Wiktionary, CC BY-SA 4.0.