Coolheaded and Unreasonable

Opposite meaning words

Coolheaded adjective - Free from emotional or mental agitation.

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Unreasonable adjective - Having no basis in reason or fact.

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Coolheaded is an antonym for unreasonable.

Cite this Source

Unreasonable and Coolheaded. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/coolheaded/unreasonable

Coolheaded & Unreasonable. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/coolheaded/unreasonable>.

Unreasonable or Coolheaded. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/coolheaded/unreasonable.

Google Ngram Viewer shows how "coolheaded" and "unreasonable" have occurred on timeline