- Definitions|1
- Thesaurus|74
- Abbreviations|0
13 entries under obscurity topic. ×
| cliffhanger(difficulty, question, secret, puzzle) | |
| cryptogram(difficulty, question, secret, puzzle) | |
| difficulty(question, secret, puzzle, subtlety) | |
| grabber(difficulty, question, secret, puzzle, perplexity) | |
| perplexity(noun, difficulty, question, secret, puzzle) | |
| question(difficulty, secret, puzzle, subtlety) | |
| secrecy(difficulty, question, secret, puzzle) | |
| sphinx(difficulty, question, secret, puzzle, perplexity) | |
| stickler(difficulty, question, secret, puzzle) | |
| stumper(difficulty, question, secret, puzzle, perplexity) | |
| subtlety(difficulty, question, secret, puzzle) | |
| teaser(difficulty, question, secret, puzzle, perplexity) | |
| twister(difficulty, question, secret, puzzle) |
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| APA | Smart Define. (2016). closed book thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/closed_book/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "closed book thesaurus" https://smartdefine.org/closed_book/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, closed book thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/closed_book/thesaurus/synonyms>. |
| MLA | Smart Define. "closed book thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/closed_book/thesaurus/synonyms> |