Jackass
Jackass noun - A person who lacks good sense or judgment.
Usage example: only a jackass would dive into a lake without first checking to see how deep the water is
Knucklehead
Knucklehead noun - A stupid person.
Usage example: I'd like to get my hands on the knucklehead who designed that paper-towel dispenser
Mutual synonyms
Related pairs
Cite this Source
Knucklehead and Jackass. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/jackass/knucklehead
Jackass & Knucklehead. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/jackass/knucklehead>.
Knucklehead or Jackass. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/jackass/knucklehead.
Google Ngram Viewer shows how "jackass" and "knucklehead" have occurred on timeline