Fallacious
Fallacious adjective - Not using or following good reasoning.
Pinheaded and fallacious are semantically related. In some cases you can use "Pinheaded" instead an adjective "Fallacious".
Pinheaded
Pinheaded adjective - Not having or showing an ability to absorb ideas readily.
Usage example: pinheaded leadership that got us into this mess
Fallacious and pinheaded are semantically related. Sometimes you can use "Fallacious" instead an adjective "Pinheaded".
Mutual synonyms
Cite this Source
Pinheaded and Fallacious. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/fallacious/pinheaded
Fallacious & Pinheaded. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/fallacious/pinheaded>.
Pinheaded or Fallacious. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/fallacious/pinheaded.
Google Ngram Viewer shows how "fallacious" and "pinheaded" have occurred on timeline