32 entries under difficulty topic. ×

4
why(noun, trouble, show, challenge)
3
mindboggler(noun, question, secret, puzzle)
2
head-scratcher(noun, trouble, show, challenge)
2
perplexity(noun, trouble, show, challenge)
2
quandary(noun, question, problem, brain)
2
vexed question(expression, question, problem)
1
confusing problem(expression, question, problem)
1
confusing question(expression, question, problem)
1
insoluble problem(expression, trouble, problem)
1
paradoxical problem(expression, trouble, problem)
1
puzzling problem(expression, question, problem)
1
puzzling question(expression, question, problem)
<12>
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APASmart Define. (2016). conundrum thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/conundrum/thesaurus/synonyms
ChicagoSmart Define. 2016. "conundrum thesaurus" https://smartdefine.org/conundrum/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, conundrum thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/conundrum/thesaurus/synonyms>.
MLASmart Define. "conundrum thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/conundrum/thesaurus/synonyms>