Preposterous and Plausible
Opposite meaning words
Preposterous
Preposterous adjective - Conceived or made without regard for reason or reality.
Plausible
Plausible adjective - Worthy of being accepted as true or reasonable.
Usage example: it's a plausible explanation for the demise of that prehistoric species
Preposterous is an antonym for plausible.
Nearby Words: plausibly, plausibility
Cite this Source
Plausible and Preposterous. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/preposterous/plausible
Preposterous & Plausible. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/preposterous/plausible>.
Plausible or Preposterous. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/preposterous/plausible.
Google Ngram Viewer shows how "preposterous" and "plausible" have occurred on timeline