Counterfeit and Unauthentic

Counterfeit

Counterfeit adjective - Being such in appearance only and made or manufactured with the intention of committing fraud.
Usage example: counterfeit currency that had been passed all over town

Unauthentic and counterfeit are semantically related. In some cases you can use "Unauthentic" instead an adjective "Counterfeit".

Unauthentic

Unauthentic adjective - Being such in appearance only and made or manufactured with the intention of committing fraud.
Usage example: trying to sell unauthentic autographs of American presidents
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Synonyms for Unauthentic

Counterfeit and unauthentic are semantically related. You can use "Counterfeit" instead an adjective "Unauthentic".
Cite this Source
Unauthentic and Counterfeit. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/counterfeit/unauthentic
Counterfeit & Unauthentic. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/counterfeit/unauthentic>.
Unauthentic or Counterfeit. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/counterfeit/unauthentic.
Google Ngram Viewer shows how "counterfeit" and "unauthentic" have occurred on timeline