counterfeit

(noun) a copy that is represented as the original. Synonyms: forgery.

(verb) make a copy of with the intent to deceive. Synonyms: forge, fake. Examples: "He faked the signature." "They counterfeited dollar bills." "She forged a green card."

(adj) not genuine; imitating something superior. Synonyms: counterfeit (vs. genuine), imitative. Examples: "Counterfeit emotion." "Counterfeit money." "Counterfeit works of art." "A counterfeit prince."