| cryptogram(question, secret, puzzle, obscurity, knot) |
| dilemma(noun, trouble, concern, difficulty, anxiety) |
| evasion(reasoning, falsehood) |
| head-scratcher(noun, trouble, challenge, brainteaser) |
| hoax(trick, charm, nonsense) |
| jesuitry |
| mumbo jumbo(expression, trick, charm, nonsense) |
| occultism(trick, charm, nonsense) |
| opacity |
| secrecy(question, secret, puzzle, obscurity, subtlety) |
| secret(noun, trouble, challenge, question, puzzle) |
| sophistry |
| special pleading(expression, idiom, reasoning) |
| speciousness |
| stickler(question, secret, puzzle, obscurity, knot) |
| strait(noun, difficulty, question, puzzle, predicament) |
| stumper(question, secret, puzzle, obscurity, knot) |
| stupefaction(noun, trouble, difficulty, confusion, uncertainty) |
| subtlety(question, secret, puzzle, obscurity, mystery) |
| teaser(question, secret, puzzle, obscurity, knot) |