Unauthentic and Valid

Opposite meaning words

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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Valid is an antonym for unauthentic in counterfeit topic.

Valid adjective - According to the rules of logic.

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Unauthentic is an antonym for valid.

Nearby Words: validity, validation

Cite this Source

Valid and Unauthentic. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/unauthentic/valid

Unauthentic & Valid. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/unauthentic/valid>.

Valid or Unauthentic. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/unauthentic/valid.

Google Ngram Viewer shows how "unauthentic" and "valid" have occurred on timeline