120 entries under noun topic. ×
| charade(question, secret, puzzle, brain-twister) | |
| crux criticorum(expression, idiom, secret, brain) | |
| field of inquiry(expression, idiom, question, secret) | |
| knotty point(expression, idiom, question, secret) | |
| matter in dispute(expression, idiom, question, secret) | |
| moot point(expression, idiom, question, secret) | |
| quiz(verb, difficult, issue, think) | |
| rebus(question, secret, puzzle, brain-twister) | |
| nonplus(verb, difficult, issue, think) | |
| quandary(trouble, difficult, issue, challenge) | |
| brain twister(expression, idiom, difficult, issue) | |
| mind-boggler(challenge, question, problem, secret) | |
| obscurity(difficult, issue, question, secret) | |
| trouble(verb, adjective, difficult, issue) | |
| vexed question(expression, idiom, trouble, challenge) | |
| ambiguity(uncertainty, absurdity, obscurity, vagueness) | |
| challenge(verb, difficulty, difficult, issue) | |
| cliffhanger(difficulty, question, secret, puzzle) | |
| desideratum(difficult, issue, question, task) | |
| diagnus vindice nodus(expression, idiom, problem, secret) |
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| APA | Smart Define. (2016). enigma thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/enigma/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "enigma thesaurus" https://smartdefine.org/enigma/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, enigma thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/enigma/thesaurus/synonyms>. |
| MLA | Smart Define. "enigma thesaurus" 1 April 2016. Web. 29 September 2026. <https://smartdefine.org/enigma/thesaurus/synonyms> |