60 entries under puzzle topic. ×

1
abstruseness(noun, question, secret, subtlety)
1
brain-teaser(noun, question, riddle)
1
braintwister(noun, question, secret, subtlety)
1
case(noun, riddle, enigma)
1
charade(noun, question, secret, subtlety)
1
chiller(noun, question, secret, subtlety)
1
cliffhanger(noun, difficulty, question, secret)
1
confusing(noun, question, riddle)
1
crux(noun, difficulty, question, secret)
1
difficult problem(noun, question, riddle)
1
difficult question(noun, question, riddle)
1
difficulty(noun, question, secret, subtlety)
1
dilemma(noun, question, mystery, conundrum)
1
grabber(noun, difficulty, challenge, question, secret)
1
inscrutability(noun, question, secret, subtlety)
1
inscrutableness(noun, question, secret, subtlety)
1
knot(noun, riddle, enigma)
1
mind-breaker(noun, question, riddle)
1
mindboggler(noun, question, secret, subtlety)
1
mystification(noun, question, secret, obscurity)
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APASmart Define. (2015). brainteaser thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/brainteaser/thesaurus/synonyms
ChicagoSmart Define. 2015. "brainteaser thesaurus" https://smartdefine.org/brainteaser/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, brainteaser thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/brainteaser/thesaurus/synonyms>.
MLASmart Define. "brainteaser thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/brainteaser/thesaurus/synonyms>