75 entries under noun topic. ×

1
confusing(question, puzzle, riddle)
1
difficult problem(question, puzzle, riddle)
1
difficult question(question, puzzle, riddle)
1
dilemma(trouble, challenge, puzzle)
1
gimmick(object, scheme)
1
kicker
1
knack
1
magic number(expression, confidence, perplexity, mystery)
1
mask
1
mind-breaker(question, puzzle, riddle)
1
poser(question, puzzle, obscurity, subtlety)
1
privileged information(expression, confidence, perplexity, mystery)
1
pun(question, puzzle, riddle)
1
recipe
1
route
1
skeleton in cupboard(expression, idiom, confidence, perplexity)
0
elixir
0
inside information(expression, idiom, information)
0
aid(trick, device, ploy, stunt)
0
confidential affair
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APASmart Define. (2016). secret thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/secret/thesaurus/synonyms
ChicagoSmart Define. 2016. "secret thesaurus" https://smartdefine.org/secret/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, secret thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/secret/thesaurus/synonyms>.
MLASmart Define. "secret thesaurus" 31 March 2016. Web. 30 September 2026. <https://smartdefine.org/secret/thesaurus/synonyms>