56 entries under issue topic. ×

59
mystery(noun, trouble, show, dispute, difficulty)
56
conundrum(noun, trouble, show, difficulty, difficult)
43
puzzle(noun, trouble, show, dispute, difficulty)
29
problem(noun, trouble, difficulty, challenge)
29
brain-teaser(noun, trouble, difficult, challenge)
15
puzzler(noun, show, difficulty, difficult)
12
stumper(noun, trouble, difficulty, difficult)
9
dilemma(noun, trouble, difficult, challenge)
9
brainteaser(noun, difficulty, difficult, challenge)
9
teaser(noun, difficulty, difficult, challenge)
8
head-scratcher(noun, trouble, difficult, challenge)
6
crossword(noun, difficult, question, task)
6
crossword puzzle(noun, expression, idiom, difficult)
6
difficulty(noun, trouble, difficult, challenge)
6
twister(noun, difficulty, difficult, challenge)
5
quiz(noun, verb, difficult, think)
4
nonplus(noun, verb, difficult, think)
4
quandary(noun, trouble, difficult, challenge)
4
brain twister(noun, expression, idiom, difficult)
4
obscurity(noun, difficult, question, secret)
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APASmart Define. (2016). enigma thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/enigma/thesaurus/synonyms
ChicagoSmart Define. 2016. "enigma thesaurus" https://smartdefine.org/enigma/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, enigma thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/enigma/thesaurus/synonyms>.
MLASmart Define. "enigma thesaurus" 1 April 2016. Web. 20 September 2026. <https://smartdefine.org/enigma/thesaurus/synonyms>