Rational and Unreasoning

Opposite meaning words

Rational adjective - Having the ability to reason.

Usage example: human beings are rational creatures

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Unreasoning is an antonym for rational.

Unreasoning adjective - Not using or following good reasoning.

Usage example: an unreasoning argument based on some false assumptions

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Rational is an antonym for unreasoning in topics: illogical, absent-minded.

Cite this Source

Unreasoning and Rational. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/rational/unreasoning

Rational & Unreasoning. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/rational/unreasoning>.

Unreasoning or Rational. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/rational/unreasoning.

Google Ngram Viewer shows how "rational" and "unreasoning" have occurred on timeline