Hopeless
Insoluble
Insoluble adjective - Incapable of being solved or accomplished.
Usage example: the seemingly insoluble mystery concerning the identity of the people who built these ancient structures
Hopeless and insoluble are semantically related. Sometimes you can use "Hopeless" instead an adjective "Insoluble".
Nearby Word: insolubility
Mutual synonyms
Cite this Source
Insoluble and Hopeless. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/hopeless/insoluble
Hopeless & Insoluble. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/hopeless/insoluble>.
Insoluble or Hopeless. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/hopeless/insoluble.
Google Ngram Viewer shows how "hopeless" and "insoluble" have occurred on timeline