20 entries under secrecy topic. ×

16
obscurity(noun, uncertainty, vagueness, complexity)
7
subtlety(noun, difficulty, question, secret, puzzle)
5
difficulty(noun, challenge, question, secret, puzzle)
4
ambiguity(noun, uncertainty, obscurity, vagueness)
2
inscrutability(noun, difficulty, question, secret, puzzle)
2
vagueness(noun, uncertainty, obscurity, haziness)
1
brainteaser(noun, difficulty, challenge, question, secret)
1
braintwister(difficulty, question, secret, puzzle, subtlety)
1
charade(difficulty, question, secret, puzzle, subtlety)
1
chiller(difficulty, question, secret, puzzle, subtlety)
1
inscrutableness(difficulty, question, secret, puzzle, subtlety)
1
mindboggler(difficulty, question, secret, puzzle, subtlety)
1
occult(difficulty, question, secret, puzzle, subtlety)
1
oracle(difficulty, question, secret, puzzle, subtlety)
1
poser(difficulty, question, secret, puzzle, subtlety)
1
rebus(difficulty, question, secret, puzzle, subtlety)
1
rune(difficulty, question, secret, puzzle, subtlety)
1
secret(question, puzzle, perplexity, obscurity, subtlety)
1
thriller(difficulty, question, secret, puzzle, subtlety)
1
whodunit(difficulty, question, secret, puzzle, subtlety)
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APASmart Define. (2015). abstruseness thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/abstruseness/thesaurus/synonyms
ChicagoSmart Define. 2015. "abstruseness thesaurus" https://smartdefine.org/abstruseness/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, abstruseness thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/abstruseness/thesaurus/synonyms>.
MLASmart Define. "abstruseness thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/abstruseness/thesaurus/synonyms>