Synonyms|204Antonyms|10|Broader|1Narrower|3Related|113
2
closed book(noun, expression, question, secret, puzzle)
2
crux(noun, difficulty, question, secret, puzzle)
2
cryptogram(noun, difficulty, question, secret, puzzle)
2
difficulty(noun, trouble, challenge, question, secret)
2
grabber(noun, difficulty, challenge, question, problem)
2
hoodlum
2
mind-boggler(noun, challenge, doubt, question, problem)
2
model
2
mystification(noun, question, secret, puzzle, knot)
2
poseur
2
prickle
2
sixty-four-thousand-dollar question(noun, expression, difficulty, question, secret)
2
sphinx(noun, difficulty, question, secret, puzzle)
2
spine
2
stickler(noun, difficulty, challenge, question, problem)
2
teaser(noun, difficulty, challenge, question, problem)
2
tough nut to crack(expression, idiom, question, secret, puzzle)
2
whistle-stopper
2
why(noun, difficulty, question, secret, puzzle)
1
abstruseness(noun, difficulty, question, secret, puzzle)
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APASmart Define. (2016). stumper thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/stumper/thesaurus/synonyms
ChicagoSmart Define. 2016. "stumper thesaurus" https://smartdefine.org/stumper/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, stumper thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/stumper/thesaurus/synonyms>.
MLASmart Define. "stumper thesaurus" 29 February 2016. Web. 23 September 2026. <https://smartdefine.org/stumper/thesaurus/synonyms>