89 entries under secret topic. ×

2
acroamatic(adjective, obscure, complex, deep, thoughtful)
2
closed book(noun, expression, question, puzzle)
2
clouded(obscure, dark, unknown, hidden)
2
covered(obscure, unknown, hidden, concealed)
2
eclipsed(obscure, dark, unknown, hidden)
2
intricate(adjective, evil, heavy, deep, doubtful)
2
sequestered(obscure, dark, unknown, hidden)
2
sixty-four-thousand-dollar question(expression, question, puzzle, subtlety)
2
surreptitious(adjective, unknown, hidden, underground)
2
tough nut to crack(noun, expression, idiom, question)
1
abstruseness(noun, question, puzzle, subtlety)
1
brainteaser(noun, question, puzzle, subtlety)
1
braintwister(noun, question, puzzle, subtlety)
1
charade(difficulty, question, puzzle, subtlety)
1
chiller(difficulty, question, puzzle, subtlety)
1
cliffhanger(difficulty, question, puzzle, obscurity)
1
crux(difficulty, question, puzzle, obscurity)
1
cryptogram(difficulty, question, puzzle, obscurity)
1
difficulty(question, puzzle, obscurity, subtlety)
1
grabber(noun, difficulty, question, puzzle)
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APASmart Define. (2015). occult thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/occult/thesaurus/synonyms
ChicagoSmart Define. 2015. "occult thesaurus" https://smartdefine.org/occult/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, occult thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/occult/thesaurus/synonyms>.
MLASmart Define. "occult thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/occult/thesaurus/synonyms>