49 entries under puzzle topic. ×
| sixty-four-thousand-dollar question(expression, question, obscurity, subtlety) | |
| sphinx(question, problem, obscurity, knot) | |
| stickler(question, problem, obscurity, knot) | |
| stumper(question, problem, obscurity, knot) | |
| subtlety(question, obscurity, secrecy, anonymity) | |
| thriller(question, perplexity, obscurity, subtlety) | |
| tough nut to crack(expression, idiom, question, mystery) | |
| twister(question, problem, obscurity, knot) | |
| why(question, problem, obscurity, knot) |
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| APA | Smart Define. (2016). secret thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/secret/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "secret thesaurus" https://smartdefine.org/secret/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, secret thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/secret/thesaurus/synonyms>. |
| MLA | Smart Define. "secret thesaurus" 31 March 2016. Web. 29 September 2026. <https://smartdefine.org/secret/thesaurus/synonyms> |