Machiavellian
ambidextrous
artful
calculating
chiseling
collusive
covinous
crafty
crooked
cunning
deceitful
dishonest
disingenuous
double
double-dealing
double-faced
double-minded
double-tongued
doublehearted
duplicitous
faithless
false
false-principled
finagling
forsworn
fraudulent
furtive
guileful
indirect
insidious
insincere
perfidious
perjured
scheming
sharp
shifty
slippery
sneaky
surreptitious
treacherous
trickish
tricky
two-faced
uncandid
underhand
underhanded
unfrank
unsincere
untruthful
wily