Fatuous and Rational
Opposite meaning words
Fatuous
Fatuous adjective - Not having or showing an ability to absorb ideas readily.
Usage example: the fatuous questions that the audience members asked after the lecture suggested to the oceanographer that they had understood little
Rational
Rational adjective - Having the ability to reason.
Usage example: human beings are rational creatures
Cite this Source
Rational and Fatuous. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/fatuous/rational
Fatuous & Rational. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/fatuous/rational>.
Rational or Fatuous. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/fatuous/rational.
Google Ngram Viewer shows how "fatuous" and "rational" have occurred on timeline