Not authentic.
counterfeit; unreal
mock
Intended to deceive; false.
See also Thesaurus:fake
To obtrude by fraud or imposition.
To deceive, cheat, lie.
To assume the manner and character of; to imitate; to ape; to feign.
A decorative cover for a pillow.
A false front, or removable ornamental covering.
Trickery, hoaxing.
A fake; an imitation that purports to be genuine.
Champagne.