Illogical
Illogical adjective - Not using or following good reasoning.
Pigheaded and illogical are semantically related. In some cases you can use "Pigheaded" instead an adjective "Illogical".
Nearby Word: illogicality
Pigheaded
Pigheaded adjective - Sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.
Mutual synonyms
Cite this Source
Pigheaded and Illogical. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/illogical/pigheaded
Illogical & Pigheaded. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/illogical/pigheaded>.
Pigheaded or Illogical. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/illogical/pigheaded.
Google Ngram Viewer shows how "illogical" and "pigheaded" have occurred on timeline