Nut
Nut noun - A person judged to be legally or medically insane.
Usage example: the man walking down the street talking to himself looked like a nut until we realized he was talking into his cell phone
Wacko is a synonym for nut (North American) in madman topic. In some cases you can use "Wacko" instead the word "Nut" as a noun or an adjective, when it comes to topics like screwball.
Wacko
Wacko noun - A person judged to be legally or medically insane.
Usage example: some wacko has been sending the actress increasingly disturbing letters
Mutual synonyms
Cite this Source
Wacko and Nut. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/nut/wacko
Nut & Wacko. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/nut/wacko>.
Wacko or Nut. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/nut/wacko.
Google Ngram Viewer shows how "nut" and "wacko" have occurred on timeline