- Definitions|0
- Thesaurus|184
- Abbreviations|0
| why(noun, difficulty, question, secret, puzzle) | |
| bitch | |
| brain teaser(expression, idiom) | |
| bugaboo(noun, challenge, question, puzzle, example) | |
| cliff-hanger(noun, challenge, question, puzzle, example) | |
| confidential information(expression, perplexity, abstruseness, inscrutableness) | |
| defiance | |
| demand | |
| distrust | |
| doubt | |
| hocuspocus(perplexity, abstruseness, inscrutableness) | |
| illustration(noun, challenge, question, puzzle, example) | |
| inquiry | |
| intricacy(noun, challenge, question, puzzle, example) | |
| magic number(expression, perplexity, abstruseness, inscrutableness) | |
| mind-boggler(noun, challenge, question, puzzle, example) | |
| nonplus | |
| occultism(perplexity, abstruseness, inscrutableness) | |
| privileged information(expression, perplexity, abstruseness, inscrutableness) | |
| runes(perplexity, abstruseness, inscrutableness) |
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| APA | Smart Define. (2015). brainteaser thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/brainteaser/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "brainteaser thesaurus" https://smartdefine.org/brainteaser/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, brainteaser thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/brainteaser/thesaurus/synonyms>. |
| MLA | Smart Define. "brainteaser thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/brainteaser/thesaurus/synonyms> |