Lunatic
Lunatic noun - A person who lacks good sense or judgment.
Usage example: we all knew she was a lunatic, but we never expected her to try to jump off of the roof of the school with a hang glider
Nincompoop and lunatic are semantically related. In some cases you can use "Nincompoop" instead a noun "Lunatic".
Nincompoop
Nincompoop noun - A person who lacks good sense or judgment.
Usage example: quit acting like a nincompoop, because I know you are smarter than that
Lunatic and nincompoop are semantically related. Sometimes you can use "Lunatic" instead a noun "Nincompoop".
How words are described
| complete | complete lunatic | complete nincompoop |
| total | total lunatic | total nincompoop |
| stupid | stupid lunatic | stupid nincompoop |
| incompetent | incompetent lunatic | incompetent nincompoop |
Cite this Source
Nincompoop and Lunatic. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/lunatic/nincompoop
Lunatic & Nincompoop. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/lunatic/nincompoop>.
Nincompoop or Lunatic. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/lunatic/nincompoop.
Google Ngram Viewer shows how "lunatic" and "nincompoop" have occurred on timeline