A copy that is represented as the original WordNet 3.0 & Open English WordNet

To counterfeit means to imitate something authentic, with the intent to steal, destroy, or replace the original, for use in illegal transactions, or otherwise to deceive individuals into believing that the fake is of equal or greater value than the real thing. Wikipedia

Imitation made with the intent to deceptively represent its content or origins, such as Wikipedia Disambiguation

Making a copy or imitation which is represented as the original Wikidata

A copy that is represented as the original. OmegaWiki

The act of one who counterfeits. Wiktionary

That which is forged, fabricated, falsely devised or counterfeited. Wiktionary

That which is forged or counterfeited. Wiktionary (translation)