authentic
1. [ adjective ] conforming to fact and therefore worthy of belief
Synonyms: reliable faithful
Examples:

"an authentic account by an eyewitness" "reliable information"

Related terms: trustworthy
2. [ adjective ] not counterfeit or copied
Synonyms: veritable unquestionable bona_fide
Examples:

"an authentic signature" "a bona fide manuscript" "an unquestionable antique" "photographs taken in a veritable bull ring"

Related terms: genuine
Similar spelling:   authenticity
  authenticate