120 entries under noun topic. ×
| doubt(issue, think, question) | |
| privity(difficult, issue, question, secret) | |
| uncertainty(difficult, issue, doubt, question) | |
| brain-teaser orbrain-twister(question, secret, puzzle) | |
| braintwister(question, secret, puzzle) | |
| double-entendre(question, secret, puzzle) | |
| grabber(difficulty, challenge, question, problem) | |
| incongruity(difficult, issue, question, task) | |
| mind-twister(question, secret, dilemma, mystery) | |
| mist(verb, difficult, issue, think) | |
| mysteriousness(difficult, issue, question, task) | |
| proverb(difficult, issue, question, task) | |
| question mark(question, secret, dilemma, mystery) | |
| quodlibet(difficult, issue, question, task) | |
| secrecy(issue, doubt, question, secret) | |
| self-contradiction(difficult, issue, question, task) | |
| confoundment(difficult, issue, question, task) | |
| mystique(difficult, issue, question, task) | |
| charades(secret, puzzle, mystery, riddle) | |
| cross-word puzzle(expression, difficult, issue, 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> |