Inconceivable and Improbable

Inconceivable

Inconceivable adjective - Too extraordinary or improbable to believe.

Improbable is a synonym for inconceivable in belief topic. In some cases you can use "Improbable" instead an adjective "Inconceivable", when it comes to topics like likely, unbelievable. popular alternative

Nearby Word: inconceivability

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

Inconceivable is a synonym for improbable in likely topic. You can use "Inconceivable" instead an adjective "Improbable", if it concerns topics such as unbelievable, unthinkable, not likely. popular alternative

Nearby Words: improbability, improbably
Cite this Source
Improbable and Inconceivable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/inconceivable/improbable
Inconceivable & Improbable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/inconceivable/improbable>.
Improbable or Inconceivable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/inconceivable/improbable.
Google Ngram Viewer shows how "inconceivable" and "improbable" have occurred on timeline