17 entries under mystery topic. ×

55
enigma(noun, trouble, show, difficulty, challenge)
53
riddle(noun, trouble, show, difficulty, challenge)
32
puzzle(noun, trouble, show, difficulty, challenge)
28
brain-teaser(noun, trouble, show, difficulty, informal)
23
problem(noun, trouble, show, difficulty, challenge)
20
closed book(noun, expression, idiom, trouble, show)
17
poser(noun, trouble, show, difficulty, informal)
14
secret(noun, trouble, show, difficulty, challenge)
14
puzzlement(noun, trouble, show, difficulty, challenge)
13
mystification(noun, trouble, show, difficulty, challenge)
13
dilemma(noun, trouble, show, difficulty, challenge)
5
teaser(noun, trouble, show, difficulty, challenge)
4
brainteaser(noun, difficulty, challenge, question, secret)
4
mystery story(noun, expression, story, narration)
4
puzzler(noun, trouble, show, difficulty, challenge)
3
mindboggler(noun, difficulty, question, secret, puzzle)
3
mind-boggler(noun, challenge, doubt, question, uncertainty)
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APASmart Define. (2016). conundrum thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/conundrum/thesaurus/synonyms
ChicagoSmart Define. 2016. "conundrum thesaurus" https://smartdefine.org/conundrum/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, conundrum thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/conundrum/thesaurus/synonyms>.
MLASmart Define. "conundrum thesaurus" 1 April 2016. Web. 28 September 2026. <https://smartdefine.org/conundrum/thesaurus/synonyms>