Preposterous
Preposterous adjective - Conceived or made without regard for reason or reality.
Usage example: the idea that extraterrestrials built the pyramids is preposterous
Unreal and preposterous are semantically related. In some cases you can use "Unreal" instead an adjective "Preposterous".
Unreal
Unreal adjective - Conceived or made without regard for reason or reality.
Usage example: an unreal claim that is distant from the slightest hint of truth
Preposterous and unreal are semantically related. Sometimes you can use "Preposterous" instead an adjective "Unreal".
Nearby Words: unrealistic, unreality
Mutual synonyms
Cite this Source
Unreal and Preposterous. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/preposterous/unreal
Preposterous & Unreal. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/preposterous/unreal>.
Unreal or Preposterous. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/preposterous/unreal.
Google Ngram Viewer shows how "preposterous" and "unreal" have occurred on timeline