Inauthentic, forged (4)
I believe the answer is:
fake
(Other definitions for fake that I've seen before include "Sham, counterfeit" , "Fraud" , "Very quick" , "Counterfeit object" , "Not genuine, like forged painting" .)
I believe the answer is:
fake
(Other definitions for fake that I've seen before include "Sham, counterfeit" , "Fraud" , "Very quick" , "Counterfeit object" , "Not genuine, like forged painting" .)