Where does “authenticate” come from?

Authenticate derives from English authentic, from Latin authenticus, from Ancient Greek αὐθεντικός, ultimately from Ancient Greek αὐτός meaning self.

authenticate (English): To render authentic; to give authority to, by the...

Definitions

  1. To render authentic; to give authority to, by the...

Ancestry of “authenticate”, step by step

authenticate traces back through two separate lines of ancestry.

via English authentic

StepLanguageWordMeaning
1EnglishauthenticOf the same origin as claimed; genuine;...
2Middle Englishauthentik
3Old Frenchautentique
4Latinauthenticusoriginal, genuine, authentic
5Ancient Greekαὐθεντικόςwarranted, authentic, authoritative
6Ancient Greekαὐθέντηςa perpetrator of any act, especially that he...
7Ancient Greekαὐτο-self-
8Ancient Greekαὐτόςαὐτή f, αὐτό n; "first/second declension";...
9Proto-Indo-Europeanh₂ewaway from, off; again
10Proto-Indo-EuropeanǵʰePostpositional intensifying particle: indeed, at any rate, in fact

via Medieval Latin authenticō

StepLanguageWordMeaning
1Medieval Latinauthenticō

Words derived from “authenticate

Every word from Proto-Indo-European ǵʰeEvery word from Proto-Indo-European h₂ewEvery word from Ancient Greek αὐτός
authenticate — Etymology, Origin & Word History | Etymology Explorer