Knuckleheaded
Knuckleheaded adjective - Not having or showing an ability to absorb ideas readily.
Usage example: the editorial lampooned the knuckleheaded legislation, which was yet another attempt by the government to protect people from themselves
Mad and knuckleheaded are semantically related. In some cases you can use "Mad" instead an adjective "Knuckleheaded".
Mad
Mad adjective - Showing or marked by a lack of good sense or judgment.
Usage example: her mad decision to quit a good job and run off to the big city with a man she barely knew
Knuckleheaded and mad are semantically related. Sometimes you can use "Knuckleheaded" instead an adjective "Mad".
Mutual synonyms
Related pairs
Cite this Source
Mad and Knuckleheaded. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/knuckleheaded/mad
Knuckleheaded & Mad. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/knuckleheaded/mad>.
Mad or Knuckleheaded. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/knuckleheaded/mad.
Google Ngram Viewer shows how "knuckleheaded" and "mad" have occurred on timeline