made in imitation so as to be passed off fraudulently or deceptively as genuine; not genuine; forged

counterfeit dollar bills.

pretended; unreal

counterfeit grief.

an imitation intended to be passed off fraudulently or deceptively as genuine; forgery.

Archaic . a copy.

Archaic . a close likeness; portrait.

Obsolete . impostor; pretender.

to make a counterfeit of; imitate fraudulently; forge.

to resemble.

to simulate.

to make counterfeits, as of money.

to feign; dissemble.

noun

pretender , plagiarist , paperhanger , fabricator , faker