Loon
Loon noun - A person judged to be legally or medically insane.
Usage example: giggled like a loon at his own jokes
Nearby Word: loony
Sickie
Sickie noun - A person judged to be legally or medically insane.
Usage example: the police suspect it is some sickie with an obsession for the actress
Mutual synonyms
Cite this Source
Sickie and Loon. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/loon/sickie
Loon & Sickie. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/loon/sickie>.
Sickie or Loon. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/loon/sickie.
Google Ngram Viewer shows how "loon" and "sickie" have occurred on timeline