Rational
Rational adjective - Having the ability to reason.
Usage example: human beings are rational creatures
Sane is a synonym for rational in sensible topic. In some cases you can use "Sane" instead an adjective "Rational", when it comes to topics like behaviour, mental condition, character trait, reason. popular alternative
Sane
Sane adjective - Having full use of one's mind and control over one's actions.
Usage example: the court ruled that the woman was indeed sane when she made out her will
Rational is a synonym for sane in sensible topic. You can use "Rational" instead an adjective "Sane", if it concerns topics such as behaviour, mental condition, character trait, reason. popular alternative
Nearby Word: sanity
Mutual synonyms
Both words in one sentence
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And it should be noted, this happens in people who are otherwise perfectly reasonable, sane and rational, as far as it is possible to judge.
Source: You Cannot Grasp the True Form - Your setting never started anywhere sane or rational.
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Still, even when the teenage Sarah Grote becomes increasingly sexually frustrated and ends up dating a somewhat older man, she's quite sane and rational about it.
Source: Hormone-Addled Teenager
Cite this Source
Sane and Rational. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/rational/sane
Rational & Sane. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/rational/sane>.
Sane or Rational. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/rational/sane.
Google Ngram Viewer shows how "rational" and "sane" have occurred on timeline