Counterfeit, simulated, sham. Of things, esp. of metal, money, jewels: Counterfeit, spurious. Of a document: Forged.

Of material things or substances: Made in imitation of something else, ‘imitation’, not genuine; made of inferior or base materials; spurious, sham…

Of copper as a base metal: often with the notion of spurious, pretentious, worthless. Obsolete.

Of metal: produced by alchemy; counterfeit. Also figurative. Obsolete.

Of material things or substances: Made in imitation of something else; made to appear to be something which it is not; made of inferior or base…

Of money or goods: counterfeit. Obsolete.

attributive. Made (of less costly material) in imitation of a real or genuine article or substance.

Made of lath.

Of materials, artefacts, etc.: manufactured in imitation of other (usually more expensive) materials or goods.