esoteric
incomprehensible
inexplicable
able
abstruse
ambiguous
amphibological
amphibolous
anagogic
arcane
awe-inspiring
awesome
awful
awing
baffling
beclouded
bewildering
bizarre
blind
bothering
buried
cabalic
cabalistic
censored
classified
close
closed
clouded
concealed
confounding
confusing
covered
covert
cryptic
curious
dark
discomposing
disconcerting
dismaying
distracting
disturbing
eclipsed
eerie
embarrassing
enigmatic
enigmatical
enwrapped in mystery
equivocal
equivocatory
mystery
magical
new
terrible
wonderful
deleterious
delirious
imperious
serious