Synonyms|44Antonyms|6|Broader|33Narrower|95Related|440

20 entries under challenge topic. ×

13
difficulty(noun, trouble, question, secret)
11
question(noun, trouble, secret, brain)
11
problem(noun, trouble, question, secret)
10
dilemma(noun, trouble, question, secret)
9
quandary(noun, trouble, question, secret)
8
puzzlement(noun, trouble, question, secret)
7
mystery(noun, trouble, question, secret)
7
stumper(noun, trouble, question, secret)
6
brain-teaser(noun, trouble, question, secret)
6
deal breaker(noun, case, matter, knot)
6
riddle(noun, trouble, question, secret)
5
enigma(noun, trouble, question, secret)
5
brainteaser(noun, trouble, question, secret)
5
physics(noun, issue, case, matter)
4
puzzle(noun, trouble, question, secret)
4
difficult question(noun, expression, trouble, question)
4
cruncher(noun, trouble, question, secret)
4
facer(noun, trouble, question, secret)
4
informalposer(noun, trouble, question, secret)
4
vexed question(noun, trouble, question, secret)
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ChicagoSmart Define. 2016. "conundrum thesaurus" https://smartdefine.org/conundrum/thesaurus/related (accessed September 25, 2026).
HarvardSmart Define 2016, conundrum thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/conundrum/thesaurus/related>.
MLASmart Define. "conundrum thesaurus" 1 April 2016. Web. 25 September 2026. <https://smartdefine.org/conundrum/thesaurus/related>