75 entries under puzzle topic. ×

9
teaser(noun, difficulty, difficult, issue, challenge)
8
head-scratcher(noun, trouble, difficult, issue, challenge)
6
tough nut to crack(noun, expression, question, secret)
6
crossword puzzle(noun, expression, idiom, difficult, issue)
6
cryptogram(noun, difficulty, question, secret)
6
difficulty(noun, trouble, difficult, issue, challenge)
6
fair question(noun, expression, idiom, question, secret)
6
sphinx(noun, difficulty, question, secret)
6
twister(noun, difficulty, difficult, issue, challenge)
5
anagram(noun, question, problem, secret)
5
bone of contention(noun, expression, idiom, question, secret)
5
charade(noun, question, secret, brain-twister)
5
field of inquiry(noun, expression, idiom, question, secret)
5
knotty point(noun, expression, idiom, question, secret)
5
matter in dispute(noun, expression, idiom, question, secret)
5
moot point(noun, expression, idiom, question, secret)
5
rebus(noun, question, secret, brain-twister)
4
brain twister(noun, expression, idiom, difficult, issue)
4
mind-boggler(noun, challenge, question, problem, secret)
4
obscurity(noun, difficult, issue, question, secret)
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APASmart Define. (2016). enigma thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/enigma/thesaurus/synonyms
ChicagoSmart Define. 2016. "enigma thesaurus" https://smartdefine.org/enigma/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, enigma thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/enigma/thesaurus/synonyms>.
MLASmart Define. "enigma thesaurus" 1 April 2016. Web. 27 September 2026. <https://smartdefine.org/enigma/thesaurus/synonyms>