28 entries under challenge topic. ×

12
poser(noun, difficulty, question, secret)
10
enigma(noun, trouble, difficulty, question)
9
problem(noun, trouble, difficulty, question)
6
mystery(noun, trouble, difficulty, question)
5
puzzle(noun, trouble, difficulty, question)
5
puzzler(noun, difficulty, question, problem)
4
brainteaser(noun, difficulty, question, secret)
4
question(noun, trouble, secret, puzzle)
3
riddle(noun, difficulty, question, problem)
3
twister(noun, difficulty, question, problem)
3
vexed question(noun, trouble, question)
2
difficulty(noun, trouble, question, secret)
2
grabber(noun, difficulty, question, problem)
2
mind-boggler(noun, doubt, question, problem)
2
stickler(noun, difficulty, question, problem)
2
teaser(noun, difficulty, question, problem)
1
cruncher(noun, trouble, question)
1
difficult question(noun, trouble, question)
1
dilemma(noun, trouble, question)
1
facer(noun, trouble, question)
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APASmart Define. (2016). stumper thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/stumper/thesaurus/synonyms
ChicagoSmart Define. 2016. "stumper thesaurus" https://smartdefine.org/stumper/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, stumper thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/stumper/thesaurus/synonyms>.
MLASmart Define. "stumper thesaurus" 29 February 2016. Web. 24 September 2026. <https://smartdefine.org/stumper/thesaurus/synonyms>