jackleg
crooked as a dog's hind leg
unhonest
dishonestly
ethically challenged
knave
sneaky
crooked as a barrel of fish hooks
murky
shonky
fraudulently
corrupted
unscrupulousness
unscrupulously
on the cross
false
dodgy
covinous
bent
skanker
sheisty
guilty
overexact
mendacity
deceitfully
venally
bent as a nine-bob note
fake-ass
skank
rogue
phony as a three-dollar bill
overscrupulosity
fraudfully
charlatanism
sophisticative
sharp
underhand
quackery
untruthfulness
roguishly
dishonourer
stand upon points
crafty
skulduggery
untruthful
underhanded
play dirty
dirty
treacherous
overscrupulousness
untruther
shoddy
sordid
dishonesty
hoky-poky
loopie
hyperscrupulosity
crooked
rannygazoo
fraudulent
double-dealing
two-faced
deceptively
Daedalian
collusively
dishonorable
phony
dishonest
sleveen
deceivingly
sleiveen
dishonoured
take the shadow for the substance
miscredit
shammish
whillywha
fraudulence
guileful
untruthfully
mendacious
untrustingly
rascal
trucker
dolosity
wheeler-dealer
deceitful
fork-tongued
guile
chicane
overindulgently
untrustworthily
juggins
plagiaristically
thugduggery
humbug