counterfeit

[1]	forge , fake
[2]	forge , copy , reproduce , falsify , imitate , (Slang) hang paper
[3]	feign , pretend , simulate , put on , fake

[1]	forgery
[2]	fake , imitation , forgery , reproduction , (Colloq) phoney/(US) phony

adj.

[1]	forged , fake , fraudulent , imitation , bogus , spurious , (Colloq) phoney/(US) phony
[2]	make-believe , sham , pretended , pretend , feigned , insincere , fake , faked , false , artificial , meretricious , pseudo , factitious , synthetic , unreal , simulated
[3]	imitative