Irrational
Irrational adjective - Not using or following good reasoning.
Questionable and irrational are semantically related. In some cases you can use "Questionable" instead an adjective "Irrational".
Nearby Words: irrationality, irrationally
Questionable
Questionable adjective - Giving good reason for being doubted, questioned, or challenged.
Irrational and questionable are semantically related. Sometimes you can use "Irrational" instead an adjective "Questionable".
Mutual synonyms
Both words in one sentence
- It's also questionable whether or not Contractors truly have shallow affect, as a number of them do a number of irrational actions for the benefit of others.
Source: The Sociopath / Anime and Manga
Cite this Source
Questionable and Irrational. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/irrational/questionable
Irrational & Questionable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/irrational/questionable>.
Questionable or Irrational. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/irrational/questionable.
Google Ngram Viewer shows how "irrational" and "questionable" have occurred on timeline