phony
adjective
°Fraudulent; fake; having a misleading appearance.
"A good jeweler should be able to tell a real stone from a phony one."
noun
°A faker, a person who professes beliefs or opinions that he or she does not hold or assumes an identity other than their own.
"He's as phony as a three-dollar bill."
synonyms: bogus, counterfeit, fake, dissembler more» , pretender, fake