1. (

• authentic ,
• reliable ,

) conforming to fact and therefore worthy of belief; "an authentic account by an eyewitness"; "reliable information" ;

2. (

• authentic ,
• bona_fide ,
• unquestionable ,
• veritable

) not counterfeit or copied; "an authentic signature"; "a bona fide manuscript"; "an unquestionable antique"; "photographs taken in a veritable bull ring" ;