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