Synonyms|145Antonyms|47|Broader|40Narrower|89Related|154

86 entries under mystery topic. ×

2
private matter(expression, idiom, secret, brain-twister)
2
privileged communication(expression, idiom, secret, brain-twister)
2
profound secret(expression, idiom, secret, brain-twister)
2
puzzling thing(expression, idiom, secret, brain-twister)
2
restricted information(expression, idiom, secret, brain-twister)
2
unexplored ground(expression, idiom, secret, brain-twister)
2
unexplored territory(expression, idiom, secret, brain-twister)
2
charades(noun, secret, puzzle, riddle)
2
confidential information(expression, confidence, secret, puzzle)
2
cross-word puzzle(noun, expression, difficult, issue, secret)
2
dark secret(noun, expression, secret, puzzle)
2
ink crossword(noun, expression, difficult, issue, secret)
2
magic number(expression, confidence, secret, puzzle)
2
pictorial puzzle(noun, expression, difficult, issue, secret)
2
privacy(noun, secret, puzzle, riddle)
2
skeleton in cupboard(expression, idiom, confidence, secret, puzzle)
2
skeleton in the cupboard(expression, idiom, confidence, secret, puzzle)
1
aenigma(noun, question, secret, puzzle, task)
1
bitter fleabane(noun, question, secret, puzzle, task)
1
brain-twister(noun, question, secret, puzzle)
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ChicagoSmart Define. 2016. "enigma thesaurus" https://smartdefine.org/enigma/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, enigma thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/enigma/thesaurus/synonyms>.
MLASmart Define. "enigma thesaurus" 1 April 2016. Web. 1 October 2026. <https://smartdefine.org/enigma/thesaurus/synonyms>