36 entries under difficulty topic. ×

8
mystery(noun, question, secret, puzzle)
7
enigma(noun, question, secret, puzzle)
7
riddle(noun, question, secret, puzzle)
6
problem(noun, question, secret, puzzle)
4
puzzle(noun, question, secret, obscurity)
3
brainteaser(noun, question, secret, puzzle)
3
poser(noun, question, secret, puzzle)
2
sixty-four-thousand-dollar question(expression, question, secret, puzzle)
2
stickler(question, secret, puzzle, knot)
2
stumper(question, secret, puzzle, knot)
2
teaser(question, secret, puzzle, knot)
2
twister(question, secret, puzzle, knot)
1
closed book(expression, question, secret, puzzle)
1
perplexity(noun, question, secret, puzzle)
1
abstruseness(question, secret, puzzle, obscurity)
1
braintwister(question, secret, puzzle, obscurity)
1
charade(question, secret, puzzle, obscurity)
1
chiller(question, secret, puzzle, obscurity)
1
cliffhanger(question, secret, puzzle, knot)
1
rune(question, secret, puzzle, obscurity)
<12>
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APASmart Define. (2015). cryptogram thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/cryptogram/thesaurus/synonyms
ChicagoSmart Define. 2015. "cryptogram thesaurus" https://smartdefine.org/cryptogram/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, cryptogram thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/cryptogram/thesaurus/synonyms>.
MLASmart Define. "cryptogram thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/cryptogram/thesaurus/synonyms>