Loon
Loon noun - A person judged to be legally or medically insane.
Usage example: giggled like a loon at his own jokes
Monomaniac and loon are semantically related. In some cases you can use "Monomaniac" instead a noun "Loon".
Nearby Word: loony
Monomaniac
Monomaniac noun - A person suffering from monomania.
Loon and monomaniac are semantically related. Sometimes you can use "Loon" instead a noun "Monomaniac".
Nearby Word: monomania
Mutual synonyms
Cite this Source
Monomaniac and Loon. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/loon/monomaniac
Loon & Monomaniac. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/loon/monomaniac>.
Monomaniac or Loon. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/loon/monomaniac.
Google Ngram Viewer shows how "loon" and "monomaniac" have occurred on timeline