concealed
Machiavellian
Machiavellic
acute
arch
artful
astute
back-door
backstairs
cagey
canny
catlike
catty
clandestine
clever
closet
covert
crafty
cunning
cute
deceitful
deep
deep-laid
designing
diplomatic
doggo
feline
foxy
furtive
guileful
hidden out
hidlings
hole-and-corner
hugger-mugger
hush-hush
in ambush
in hiding
in the wings
ingenious
insidious
inventive
knowing
lurking
noiseless
on tiptoe
pawky
politic
stealthier
stealthiest
brisk
cautious
deliberate
hasty
hesitant
imperceptible
leisurely
ominous
purposeful
rhythmic
secretive
sidelong
sly
steady
surreptitious
timid
unhurried
healthy
unhealthy
wealthy