Brain and Rational

Related words

Brain noun - A very smart person.

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Rational and brain are semantically related. In some cases you can use "Rational" instead an adjective "Brain".

Nearby Words: brainstorm, brainy, brainless, brained, braining

Rational adjective - Having the ability to reason.

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Brain and rational are semantically related. Sometimes you can use "Brain" instead an adjective "Rational".

And the only reason I'm not even tryin' to change your mind on it is that anything approaching rational thought would bounce off that thick plate on your forehead—assuming that's Klingon ridges and not a massive brain tumor responsible for your long string of bad decisions.

Source: The Reason You Suck Speech / SF Debris
The heart does influence the nervous system more than the brain in formative years, it can take as long as seven years for a truly rational (and calorie hogging) brain to develop while the heart takes much less time to get there.

Source: Cardiovascular Love
Ed: The guy had a rational hatred for references; a vocal cover was too much for his elitist brain to handle.

Source: Reference Overdosed

Cite this Source

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

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

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

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