75 entries under puzzle topic. ×

4
challenge(noun, verb, difficulty, difficult, issue)
4
cliffhanger(noun, difficulty, question, secret)
4
difficult question(noun, trouble, challenge, question)
4
open question(noun, expression, idiom, question, secret)
4
plain question(noun, expression, idiom, question, secret)
4
point in dispute(noun, expression, idiom, question, secret)
4
question at issue(noun, expression, idiom, question, secret)
4
subject of controversy(noun, expression, idiom, question, secret)
4
subject of inquiry(noun, expression, idiom, question, secret)
3
confusion(noun, difficult, issue, question)
3
brain-teaser orbrain-twister(noun, question, secret)
3
braintwister(noun, question, secret)
3
double-entendre(noun, question, secret)
3
grabber(noun, difficulty, challenge, question, problem)
2
charades(noun, secret, mystery, riddle)
2
confidential information(expression, confidence, secret, mystery)
2
cross-word puzzle(noun, expression, difficult, issue, secret)
2
dark secret(noun, expression, secret, mystery)
2
ink crossword(noun, expression, difficult, issue, secret)
2
magic number(expression, confidence, secret, mystery)
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APASmart Define. (2016). enigma thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/enigma/thesaurus/synonyms
ChicagoSmart Define. 2016. "enigma thesaurus" https://smartdefine.org/enigma/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, enigma thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/enigma/thesaurus/synonyms>.
MLASmart Define. "enigma thesaurus" 1 April 2016. Web. 28 September 2026. <https://smartdefine.org/enigma/thesaurus/synonyms>