Definition of: authentic

(ô·then′tik) adjective
1. According with the facts; authoritative; trustworthy; reliable.
2. Of undisputed origin; genuine.
3. Law Duly executed before the proper officer. Also au·then′ti·cal. [<OF autentique <L authenticus <Gk. authentikos <authentēs the doer of a deed]
—au·then′ti·cal·ly adverb Synonyms: accepted, accredited, authoritative, authorized, certain, current, genuine, legitimate, original, real, received, sure, true, trustworthy, veritable. Antonyms: apocryphal, baseless, counterfeit, disputed, exploded, fabulous, false, fictitious, spurious, unauthorized.