10 entries under thinking topic. ×

14
perplexity(noun, state, feeling, confusion, challenge)
8
brainteaser(noun, challenge, question, brain)
8
problem(noun, challenge, question, brain)
7
challenge(noun, trial, brain)
6
case(noun, challenge, brain)
6
knot(noun, challenge, brain)
6
matter(noun, challenge, brain)
6
poser(noun, challenge, brain)
6
stumper(noun, challenge, brain)
6
trouble(noun, challenge, brain)
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APASmart Define. (2016). conundrum thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/conundrum/thesaurus/broader
ChicagoSmart Define. 2016. "conundrum thesaurus" https://smartdefine.org/conundrum/thesaurus/broader (accessed September 23, 2026).
HarvardSmart Define 2016, conundrum thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/conundrum/thesaurus/broader>.
MLASmart Define. "conundrum thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/conundrum/thesaurus/broader>