19 entries under mystery topic. ×

2
enigma(noun, confidence)
1
classified information(noun, expression, confidence)
1
confidence
1
magic number(noun, expression, confidence, secret, perplexity)
1
occult(noun, confidence, perplexity, abstruseness)
1
privileged information(noun, expression, confidence, secret, perplexity)
1
secret(noun, confidence, perplexity, unrevealed)
0
cipher(noun, confidence)
0
code(noun, confidence)
0
formula(noun, confidence)
0
key(noun, confidence)
0
oracle(noun, confidence)
0
password(noun, confidence)
0
puzzle(noun, confidence)
0
riddle
0
skeleton in cupboard(expression, idiom, confidence, secret, perplexity)
0
skeleton in the cupboard(expression, idiom, confidence)
0
unknown(noun, confidence)
0
unrevealed(noun, confidence, secret)
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APASmart Define. (2015). confidential information thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/confidential_information/thesaurus/synonyms
ChicagoSmart Define. 2015. "confidential information thesaurus" https://smartdefine.org/confidential_information/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, confidential information thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/confidential_information/thesaurus/synonyms>.
MLASmart Define. "confidential information thesaurus" 13 April 2015. Web. 1 October 2026. <https://smartdefine.org/confidential_information/thesaurus/synonyms>