fake
/ˈfāk/
adjective
not true, real, or genuine : counterfeit, sham
He was wearing a fake mustache.
noun
one that is not what it purports to be: such as
a worthless imitation passed off as genuine
impostor, charlatan
The signature was a fake.
verb
to alter, manipulate, or treat so as to give a spuriously genuine appearance to : doctor
counterfeit, simulate, concoct
to deceive (an opponent) in a sports contest by means of a fake
faked the lab results