Nonvalid and Valid

Opposite meaning words

Nonvalid adjective - Having no basis in reason or fact.

Usage example: a nonvalid theory that most scientists rejected long ago

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Valid is an antonym for nonvalid.

Valid adjective - Based on sound reasoning or information.

Usage example: only further investigation will show whether your theory is valid

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Nonvalid is an antonym for valid.

Nearby Words: validity, validation

Cite this Source

Valid and Nonvalid. (2017). Retrieved 2026, August 13, from https://thesaurus.plus/related/nonvalid/valid

Nonvalid & Valid. N.p., 2017. Web. 13 Aug. 2026. <https://thesaurus.plus/related/nonvalid/valid>.

Valid or Nonvalid. 2017. Accessed August 13, 2026. https://thesaurus.plus/related/nonvalid/valid.

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