Irrational
Irrational adjective - Not using or following good reasoning.
Usage example: it's irrational to think that you can continue to consume an excess of calories and not gain weight
Unsound is a synonym for irrational in illogical topic. In some cases you can use "Unsound" instead an adjective "Irrational", when it comes to topics like unreasonable.
Nearby Words: irrationality, irrationally
Unsound
Unsound adjective - Having or showing a very abnormal or sick state of mind.
Usage example: disgruntled relatives tried to prove that the woman was of unsound mind when she made her will
Irrational is a synonym for unsound in illogical topic. You can use "Irrational" instead an adjective "Unsound", if it concerns topics such as untenable.
Mutual synonyms
Related pairs
- wrong and irrational
- wrong and unsound
- unstable and irrational
- unstable and unsound
- crazy and irrational
- crazy and unsound
- invalid and irrational
- invalid and unsound
- illogical and irrational
- illogical and unsound
- deranged and irrational
- deranged and unsound
- senseless and irrational
- senseless and unsound
Cite this Source
Unsound and Irrational. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/irrational/unsound
Irrational & Unsound. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/irrational/unsound>.
Unsound or Irrational. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/irrational/unsound.
Google Ngram Viewer shows how "irrational" and "unsound" have occurred on timeline