102 entries under secret topic. ×
| head-scratcher(noun, trouble, difficult, issue, challenge) | |
| labyrinth(noun, brain, twister, brain-twister) | |
| mystery story(noun, expression, idiom, question) | |
| bewilderment(noun, question, dilemma, mystery) | |
| tough nut to crack(noun, expression, question, puzzle) | |
| cipher(noun, confidence, mystery, brain-twister) | |
| code(noun, confidence, mystery, cipher) | |
| crossword puzzle(noun, expression, idiom, difficult, issue) | |
| cryptogram(noun, difficulty, question, puzzle) | |
| difficulty(noun, trouble, difficult, issue, challenge) | |
| fair question(noun, expression, idiom, question) | |
| maze(noun, brain, twister, brain-twister) | |
| sphinx(noun, difficulty, question, puzzle) | |
| twister(noun, difficulty, difficult, issue, challenge) | |
| anagram(noun, question, problem, puzzle) | |
| bone of contention(noun, expression, idiom, question) | |
| charade(noun, question, puzzle, brain-twister) | |
| crux criticorum(noun, expression, idiom, brain) | |
| field of inquiry(noun, expression, idiom, question) | |
| knotty point(noun, expression, idiom, question) |
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| APA | Smart Define. (2016). enigma thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/enigma/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "enigma thesaurus" https://smartdefine.org/enigma/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, enigma thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/enigma/thesaurus/synonyms>. |
| MLA | Smart Define. "enigma thesaurus" 1 April 2016. Web. 28 September 2026. <https://smartdefine.org/enigma/thesaurus/synonyms> |