Nonrational and Valid

Opposite meaning words

Nonrational adjective - Not using or following good reasoning.

Usage example: was so upset that he was completely nonrational for a moment

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Valid is an antonym for nonrational.

Valid adjective - Based on sound reasoning or information.

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

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Nonrational is an antonym for valid.

Nearby Words: validity, validation

Cite this Source

Valid and Nonrational. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/nonrational/valid

Nonrational & Valid. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/nonrational/valid>.

Valid or Nonrational. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/nonrational/valid.

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