Brainsick and Rational

Opposite meaning words

Brainsick adjective - Having or showing a very abnormal or sick state of mind.

Usage example: today he is regarded as a brainsick genius who produced some of the greatest paintings in the history of art

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Rational is an antonym for brainsick.

Rational adjective - Having the ability to reason.

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Brainsick is an antonym for rational.

Cite this Source

Rational and Brainsick. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/brainsick/rational

Brainsick & Rational. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/brainsick/rational>.

Rational or Brainsick. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/brainsick/rational.

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