Synonyms|130Antonyms|2|Broader|17Narrower|0Related|97

36 entries under difficulty topic. ×

1
question(secret, puzzle, obscurity, knot)
1
rebus(question, secret, puzzle, perplexity)
1
rune(question, secret, puzzle, perplexity)
1
secrecy(question, secret, puzzle, obscurity)
1
stickler(question, secret, puzzle, knot)
1
subtlety(question, secret, puzzle, obscurity)
1
thriller(question, secret, puzzle, perplexity)
1
twister(question, secret, puzzle, knot)
1
whodunit(question, secret, puzzle, perplexity)
1
why(question, secret, puzzle, knot)
0
mystery(noun, question, secret, puzzle)
0
sixty-four-thousand-dollar question(expression, question, secret, puzzle)
0
abstruseness(question, secret, puzzle, perplexity)
0
brainteaser(question, secret, puzzle, perplexity)
0
braintwister(question, secret, puzzle, perplexity)
0
charade(question, secret, puzzle, obscurity)
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APASmart Define. (2015). sphinx thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/sphinx/thesaurus/synonyms
ChicagoSmart Define. 2015. "sphinx thesaurus" https://smartdefine.org/sphinx/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, sphinx thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/sphinx/thesaurus/synonyms>.
MLASmart Define. "sphinx thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/sphinx/thesaurus/synonyms>