Probable and Unsolvable

Probable

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

Unsolvable is an antonym for probable.

Unsolvable

Unsolvable adjective - Incapable of being solved or accomplished.
Usage example: an apparently unsolvable problem

Probable is an antonym for unsolvable.
Cite this Source
Unsolvable and Probable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/probable/unsolvable
Probable & Unsolvable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/probable/unsolvable>.
Unsolvable or Probable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/probable/unsolvable.
Google Ngram Viewer shows how "probable" and "unsolvable" have occurred on timeline