Cuckoo and Reasonable

Opposite meaning words

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

Usage example: a cuckoo woman who wandered around town carefully gathering up useless trash

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Reasonable is an antonym for cuckoo.

Nearby Word: cuckooing

Reasonable adjective - According to the rules of logic.

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Cuckoo is an antonym for reasonable.

Cite this Source

Reasonable and Cuckoo. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/cuckoo/reasonable

Cuckoo & Reasonable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/cuckoo/reasonable>.

Reasonable or Cuckoo. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/cuckoo/reasonable.

Google Ngram Viewer shows how "cuckoo" and "reasonable" have occurred on timeline