- Definitions|1
- Thesaurus|67
- Abbreviations|0
50 entries under noun topic. ×
| conundrum(trouble, difficulty, informal, challenge) | |
| enigma(trouble, challenge, question, puzzle) | |
| riddle(trouble, challenge, question, puzzle) | |
| mystery(trouble, challenge, question, puzzle) | |
| closed book(expression, trouble, challenge, puzzle) | |
| secret(trouble, challenge, question, puzzle) | |
| problem(trouble, challenge, question, puzzle) | |
| puzzle(trouble, challenge, question, mystery) | |
| puzzlement(trouble, challenge, question, puzzle) | |
| arcanum | |
| poser(trouble, challenge, question, puzzle) | |
| whodunit | |
| mystification(trouble, challenge, question, puzzle) | |
| paradox(trouble, challenge, question, puzzle) | |
| mystery story | |
| why(trouble, challenge, puzzle) | |
| difficult problem(question, puzzle, riddle) | |
| dilemma(trouble, challenge, question, puzzle) | |
| stumper(question, puzzle, dilemma, complexity) | |
| teaser(question, puzzle, dilemma, complexity) |
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| APA | Smart Define. (2016). brain-teaser thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/brain-teaser/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "brain-teaser thesaurus" https://smartdefine.org/brain-teaser/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, brain-teaser thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/brain-teaser/thesaurus/synonyms>. |
| MLA | Smart Define. "brain-teaser thesaurus" 1 April 2016. Web. 28 September 2026. <https://smartdefine.org/brain-teaser/thesaurus/synonyms> |