Monstrous
Monstrous adjective - Badly or imperfectly formed.
Preposterous is a synonym for monstrous in unnatural topic. In some cases you can use "Preposterous" instead an adjective "Monstrous".
Preposterous
Preposterous adjective - Conceived or made without regard for reason or reality.
Monstrous is a synonym for preposterous in ridiculous topic. You can use "Monstrous" instead an adjective "Preposterous", if it concerns topics such as outrageous.
Mutual synonyms
Cite this Source
Preposterous and Monstrous. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/monstrous/preposterous
Monstrous & Preposterous. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/monstrous/preposterous>.
Preposterous or Monstrous. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/monstrous/preposterous.
Google Ngram Viewer shows how "monstrous" and "preposterous" have occurred on timeline