currency produced outside of the legal sanction of a state or government, usually in a deliberate attempt to imitate that currency and so as to deceive its recipient.

Counterfeiting of the currency of the United States is widely attempted.

a British-Canadian animated television series developed by Aardman Animations, Cristina Fiumara, and Ben Marsaud.

a 1962 espionage thriller film starring William Holden, Hugh Griffith, and Lilli Palmer.

A counterfeit watch (or replica watch) is an unauthorised copy of an authentic watch.

A counterfeit medication or a counterfeit drug is a medication or pharmaceutical item which is produced and sold with the intent to deceptively represent its origin, authenticity, or effectiveness.