Loony and Reasonable

Loony

Loony adjective - Showing or marked by a lack of good sense or judgment.
Usage example: that's got to be the looniest idea I've ever heard

Reasonable is an antonym for loony.

Nearby Word: loon

Reasonable

Reasonable adjective - According to the rules of logic.
Usage example: his answer is perfectly reasonable

Loony is an antonym for reasonable.

Cite this Source
Reasonable and Loony. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/loony/reasonable
Loony & Reasonable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/loony/reasonable>.
Reasonable or Loony. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/loony/reasonable.
Google Ngram Viewer shows how "loony" and "reasonable" have occurred on timeline