Probable and Preposterous

Opposite meaning words

Probable adjective - Worthy of being accepted as true or reasonable.

Usage example: the counselor could find no probable reason for the girl's bizarre actions

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Preposterous is an antonym for probable.

Preposterous adjective - Conceived or made without regard for reason or reality.

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Probable is an antonym for preposterous.

Cite this Source

Preposterous and Probable. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/probable/preposterous

Probable & Preposterous. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/probable/preposterous>.

Preposterous or Probable. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/probable/preposterous.

Google Ngram Viewer shows how "probable" and "preposterous" have occurred on timeline