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