authentic

adjectives

conforming to fact and therefore worthy of belief
"an authentic account by an eyewitness"; "reliable information"
authentic, reliable
is derived from
authenticity
not counterfeit or copied
"an authentic signature"; "a bona fide manuscript"; "an unquestionable antique"; "photographs taken in a veritable bull ring"
authentic, bona fide, unquestionable, veritable
is derived from
authenticity