54 entries under puzzle topic. ×

48
enigma(noun, trouble, show, dispute, difficulty)
42
riddle(noun, trouble, show, difficulty, challenge)
40
conundrum(noun, trouble, show, difficulty, challenge)
27
problem(noun, trouble, difficulty, issue, challenge)
26
secret(noun, adjective, trouble, challenge, secret)
21
closed book(noun, expression, idiom, trouble, challenge)
20
brain-teaser(noun, trouble, challenge)
17
whodunit(noun, difficulty, question, secret)
16
poser(noun, trouble, difficulty, challenge, question)
15
question(noun, trouble, issue, challenge, doubt)
13
mystification(noun, trouble, challenge, secret)
11
puzzlement(noun, trouble, challenge, secret)
11
secrecy(noun, difficulty, challenge, dark, question)
9
why(noun, trouble, difficulty, reason, informal)
9
dilemma(noun, trouble, challenge, question)
8
paradox(noun, trouble, challenge, problem)
8
subtlety(noun, difficulty, question, secret)
6
difficulty(noun, trouble, issue, challenge, question)
6
inscrutability(noun, difficulty, question, secret)
6
crux(noun, trouble, difficulty, challenge, question)
<123>
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APASmart Define. (2016). mystery thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/mystery/thesaurus/synonyms
ChicagoSmart Define. 2016. "mystery thesaurus" https://smartdefine.org/mystery/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, mystery thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/mystery/thesaurus/synonyms>.
MLASmart Define. "mystery thesaurus" 31 March 2016. Web. 30 September 2026. <https://smartdefine.org/mystery/thesaurus/synonyms>