unsteady
untrustworthy
untrusty
Machiavellian
Machiavellic
acute
adrift
afloat
alternating
ambidextrous
amoral
amorphous
arch
artful
astute
back-door
backstairs
bent
cagey
calculating
canny
capricious
changeable
changeful
chiseling
clandestine
clever
close
closemouthed
collusive
conniving
conscienceless
conspiratorial
corrupt
corrupted
covert
covinous
crafty
criminal
crooked
cunning
cute
dangerous
dark
deceitful
deceiving
deep
deep-laid
designing
desultory
deviable
devious
diplomatic
shiftier
shiftiest
avaricious
distrustful
downcast
furtive
hesitant
morose
quizzical
secretive
sheepish
shiftx
sidelong
sly
sneaky
spiteful
tricky
underhanded
unfocused
unreliable
wary
wolfish
fifty
nifty
thrifty