Difficult and Unsolvable

Difficult

Difficult adjective - Requiring considerable physical or mental effort.

Unsolvable and difficult are semantically related. In some cases you can use "Unsolvable" instead an adjective "Difficult".

Nearby Word: difficulty

Unsolvable

Unsolvable adjective - Incapable of being solved or accomplished.

Difficult and unsolvable are semantically related. Sometimes you can use "Difficult" instead an adjective "Unsolvable".
Cite this Source
Unsolvable and Difficult. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/difficult/unsolvable
Difficult & Unsolvable. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/difficult/unsolvable>.
Unsolvable or Difficult. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/difficult/unsolvable.
Google Ngram Viewer shows how "difficult" and "unsolvable" have occurred on timeline