Preposterousness and Reasonability
Opposite meaning words
Preposterousness
Preposterousness noun - Lack of good sense or judgment.
Usage example: laughed at the sheer preposterousness of the idea
Reasonability is an antonym for preposterousness.
Reasonability
Cite this Source
Reasonability and Preposterousness. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/preposterousness/reasonability
Preposterousness & Reasonability. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/preposterousness/reasonability>.
Reasonability or Preposterousness. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/preposterousness/reasonability.
Google Ngram Viewer shows how "preposterousness" and "reasonability" have occurred on timeline