Difficult
Difficult adjective - Requiring considerable physical or mental effort.
Unanswerable and difficult are semantically related. In some cases you can use "Unanswerable" instead an adjective "Difficult".
Nearby Word: difficulty
Unanswerable
Unanswerable adjective - Not capable of being challenged or proved wrong.
Difficult and unanswerable are semantically related. Sometimes you can use "Difficult" instead an adjective "Unanswerable".
Nearby Word: unanswered
Mutual synonyms
Both words in one sentence
- Questions in Only Connect tend to be fairly difficult at the best of times, but some stand out as being unanswerable by anyone except a human manifestation of Google.
Source: Unexpectedly Obscure Answer - This was added to avoid answering the always difficult (and for now unanswerable) question of how life actually arose.
Source: Panspermia
Cite this Source
Unanswerable and Difficult. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/difficult/unanswerable
Difficult & Unanswerable. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/difficult/unanswerable>.
Unanswerable or Difficult. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/difficult/unanswerable.
Google Ngram Viewer shows how "difficult" and "unanswerable" have occurred on timeline