Irrational
Irrational adjective - Not using or following good reasoning.
Suppositious and irrational are semantically related. In some cases you can use "Suppositious" instead an adjective "Irrational".
Nearby Words: irrationality, irrationally
Suppositious
Suppositious adjective - Based primarily on surmise rather than adequate evidence.
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Synonyms for Suppositious
Irrational and suppositious are semantically related. Sometimes you can use "Irrational" instead an adjective "Suppositious".
Cite this Source
Suppositious and Irrational. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/irrational/suppositious
Irrational & Suppositious. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/irrational/suppositious>.
Suppositious or Irrational. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/irrational/suppositious.
Google Ngram Viewer shows how "irrational" and "suppositious" have occurred on timeline