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enigma
enigma
synonyms
mystery
conundrum
puzzle
riddle
problem
poser
brain-teaser
question
stumper
secret
closed book
paradox
teaser
obscurity
quandary
question mark
difficulty
puzzlement
twister
dilemma
intricacy
perplexity
stickler
tough nut to crack
mystification
abstruseness
crux
ambiguity
why
complication
puzzler
grabber
sphinx
dubiety
cryptogram
unsolved problem
uncertainty
equivocation
mindboggler
vagueness
occult
query
koan
mind-boggler
oddity
unclearness
rebus
oracle
sixty-four dollar question
vexed question
more synonyms
enigma
antonyms
known
clarity
harmony
transparency
revelation
understanding
known fact
explicitness
solution
public knowledge
limpidity
lucidity
unambiguousness
concord
certainty
clearness
definiteness