Rational and Wacko

Opposite meaning words

Rational adjective - Having the ability to reason.

Show all Definitions

Wacko is an antonym for rational.

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

Usage example: the governor's staff spread rumors that his opponent's wife was wacko, as she had once undergone shock therapy for depression

Show all Definitions

Rational is an antonym for wacko.

Cite this Source

Wacko and Rational. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/rational/wacko

Rational & Wacko. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/rational/wacko>.

Wacko or Rational. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/rational/wacko.

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