The definition of authentic is something that is original or true and not a copy of anything else.(adjective)
A painting that was actually created by Monet is an example of a painting that is authentic.
See authentic in Webster's New World College Dictionary
Origin: ME autentike < OFr autentique < LL authenticus < Gr authentikos, genuine < authentēs, one who does things himself < autos, self + -hentēs < IE base *sen-, to prepare, achieve
See authentic in American Heritage Dictionary 4
Origin: Middle English autentik
Origin: , from Old French autentique
Origin: , from Late Latin authenticus
Origin: , from Greek authentikos
Origin: , from authentēs, author.
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