4
riddle(noun, dilemma, paradox, enigma)
3
anagram(noun, dilemma, riddle, paradox, enigma)
3
informalbrain-teaser(noun, dilemma, riddle, paradox, enigma)
3
puzzle(noun, dilemma, riddle, paradox, enigma)
3
word game(noun, dilemma, riddle, paradox, enigma)
1
conundrum(noun, informal, question, entertainment)
1
enigma
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APASmart Define. (2011). brain-twister thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/brain-twister/thesaurus/synonyms
ChicagoSmart Define. 2011. "brain-twister thesaurus" https://smartdefine.org/brain-twister/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2011, brain-twister thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/brain-twister/thesaurus/synonyms>.
MLASmart Define. "brain-twister thesaurus" 23 May 2011. Web. 20 September 2026. <https://smartdefine.org/brain-twister/thesaurus/synonyms>