adjective

1. Of the same origin as claimed; genuine.

   “The experts confirmed it was an authentic signature.”

2. Conforming to reality and therefore worthy of trust, reliance, or belief.

   “The report was completely authentic.”

3. (of a Gregorian mode) Having the final as the lowest note of the mode.

Synonyms: credible, reliable, trustworthy, unfaked, bona fide, bonafide, genuine, real