Difficult
Difficult adjective - Requiring considerable physical or mental effort.
Unsolved and difficult are semantically related In some cases you can use "Unsolved" instead an adjective "Difficult".
Nearby Word: difficulty
Unsolved
Unsolved adjective - Not solved.
Difficult and unsolved are semantically related in mysterious topic. You can use "Difficult" instead an adjective "Unsolved".
Mutual synonyms
Related pairs
- abstruse and difficult
- abstruse and unsolved
- unfathomable and difficult
- unfathomable and unsolved
- obscure and difficult
- obscure and unsolved
- dark and difficult
- dark and unsolved
- perplexing and difficult
- perplexing and unsolved
- puzzling and difficult
- puzzling and unsolved
- intricate and difficult
- intricate and unsolved
Both words in one sentence
- In Phoenix Wright: Ace Attorney, Phoenix has to take on four seemingly impossible cases, go through all sorts of stress and hardships to win them, suffers the blow of his mentor being murdered, and ultimately has to tackle a case so difficult, it went unsolved for fifteen years.
Cite this Source
Unsolved and Difficult. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/difficult/unsolved
Difficult & Unsolved. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/difficult/unsolved>.
Unsolved or Difficult. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/difficult/unsolved.
Google Ngram Viewer shows how "difficult" and "unsolved" have occurred on timeline