Cockamamy and Rational

Opposite meaning words

Cockamamy adjective - So foolish or pointless as to be worthy of scornful laughter.

Usage example: a cockamamy plan that could only have been dreamt up by a cartoonish mad scientist

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Rational is an antonym for cockamamy in topics: foolish, nonsensical.

Rational adjective - Having the ability to reason.

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Cockamamy is an antonym for rational.

Cite this Source

Rational and Cockamamy. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/cockamamy/rational

Cockamamy & Rational. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/cockamamy/rational>.

Rational or Cockamamy. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/cockamamy/rational.

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