mendacious
artful
calculating
crafty
deceitful
deceptive
delusive
delusory
dishonest
disingenuous
equivocal
faithless
false
falsehearted
forsworn
inaccurate
incorrect
insincere
inveracious
knavish
lying
misleading
perjured
prevaricating
roguish
scheming
shifty
truthless
uncandid
unfrank
unsincere
unveracious
wrong
deprave
dishonourable
fallacious
groundless
hypocritical
ill-natured
impolitic
quarrelsome
self-serving
unconscientious
undependable
unethical
unfair
ungenerous
unsubstantiated
untrue
untrustworthy
truthful
youthful