Insoluble
Insoluble adjective - Incapable of being solved or accomplished.
Undecidable and insoluble are semantically related. In some cases you can use "Undecidable" instead an adjective "Insoluble".
Nearby Word: insolubility
Undecidable
Insoluble and undecidable are semantically related. You can use "Insoluble" instead an adjective "Undecidable".
Mutual synonyms
Cite this Source
Undecidable and Insoluble. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/insoluble/undecidable
Insoluble & Undecidable. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/insoluble/undecidable>.
Undecidable or Insoluble. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/insoluble/undecidable.
Google Ngram Viewer shows how "insoluble" and "undecidable" have occurred on timeline