bushwhacking
dark
furtive
hidden
incognito
invisible
lying in wait
obscure
sealed
secret
sneak
sneaking
sneaky
stealthy
surreptitious
unavowed
unseeable
abstruse
arcane
beclouded
behind the curtain
behind the scenes
blind
buried
cabalistic
camouflaged
censored
classified
close
closed
clouded
covered
covert
cryptic
disguised
eclipsed
enigmatic
esoteric
guarded
hermetic
hid
hush-hush
imperceptible
in a cloud
in a fog
in eclipse
in purdah
in the wings
incommunicado
indiscernible
insensible
latent
mysterious
obfuscated
obscured
occult
out of sight
privy
recondite
restricted
secluded
Field
afield
appealed
congealed
field
heald
healed
heeled
neeld
peeled
reeled
repealed
resealed
revealed
shield
unconcealed
unsealed
wheeled
wield
yield