Rational
Rational adjective - Having the ability to reason.
Usage example: human beings are rational creatures
Sober is a synonym for rational in sensible topic. In some cases you can use "Sober" instead the word "Rational" as an adjective or a verb, when it comes to topics like character trait, sane, logical, realistic. popular alternative
Sober
Sober adjective - Based on sound reasoning or information.
Usage example: a sober assessment of the situation
Rational is a synonym for sober in sensible topic. You can use "Rational" instead an adjective "Sober", if it concerns topics such as character trait, calm, sane, serious. popular alternative
Mutual synonyms
Both words in one sentence
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Whether as spymaster or general, he is usually cold, rational and sober in the execution of his duties, and very good at what he does.
Source: Comicbook / Red Skull - Susan Sto Helit is a proper young woman, who is entirely sober and rational and will not stand for even the usual amounts of silliness that a child usually displays.
Source: Wacky Homeroom
Cite this Source
Sober and Rational. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/rational/sober
Rational & Sober. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/rational/sober>.
Sober or Rational. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/rational/sober.
Google Ngram Viewer shows how "rational" and "sober" have occurred on timeline