39 entries under question topic. ×
| enigma(noun, trouble, informal, challenge) | |
| riddle(noun, trouble, challenge, secret) | |
| mystification(noun, trouble, challenge, secret) | |
| problem(noun, trouble, challenge, secret) | |
| puzzlement(noun, trouble, challenge, secret) | |
| poser(noun, trouble, difficulty, challenge) | |
| closed book(noun, expression, trouble, challenge) | |
| perplexity(noun, difficulty, informal, secret) | |
| crux(difficulty, secret, puzzle, knot) | |
| grabber(noun, information, difficulty, reason, challenge) | |
| puzzle(difficulty, problem, secret, obscurity) | |
| puzzler(difficulty, problem, puzzle, mystery) | |
| stumper(difficulty, secret, puzzle, knot) | |
| tough nut to crack(expression, idiom, secret, puzzle) | |
| abstruseness(difficulty, secret, puzzle, obscurity) | |
| brainteaser(difficulty, secret, puzzle, obscurity) | |
| braintwister(difficulty, secret, puzzle, obscurity) | |
| charade(difficulty, secret, puzzle, obscurity) | |
| chiller(difficulty, secret, puzzle, obscurity) | |
| cliffhanger(difficulty, secret, puzzle, knot) |
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| APA | Smart Define. (2016). why thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/why/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "why thesaurus" https://smartdefine.org/why/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, why thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/why/thesaurus/synonyms>. |
| MLA | Smart Define. "why thesaurus" 2 February 2016. Web. 22 September 2026. <https://smartdefine.org/why/thesaurus/synonyms> |