Improbable and Preposterous

Improbable

Improbable adjective - Not likely to be true or to occur.
Usage example: it seems improbable that the two writers never met since they traveled in the same social circles

Preposterous and improbable are semantically related. in unconvincing topic. In some cases you can use "Preposterous" instead an adjective "Improbable", when it comes to topics like inauthentic.

Nearby Words: improbability, improbably

Preposterous

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

Improbable and preposterous are semantically related. Sometimes you can use "Improbable" instead an adjective "Preposterous".
Cite this Source
Preposterous and Improbable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/improbable/preposterous
Improbable & Preposterous. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/improbable/preposterous>.
Preposterous or Improbable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/improbable/preposterous.
Google Ngram Viewer shows how "improbable" and "preposterous" have occurred on timeline