ethically challenged
sneaky
mendacity
rogue
untruthfulness
two-faced
Daedalian
unhonest
sophisticative
dirty
sordid
shoddy
forked tongue
false
covinous
corrupted
jackleg
murky
dishonesty
fork-tongued
double-handed
double-faced
speak with a forked tongue
trucker
deceit
dishonestly
counterfeit
dolosity
roguish
euchre
untruther
on the cross
unveracity
deceitfulness
perfidiousness
inauthenticity
mendacious
deceptively
impenetrable
fallacious
skanker
untruthfully
deceitfully
duplicit
untruthful
dodgy
swike
indecorum
deceivous
noodleism
dishonestness
disinterestedly
hollow-hearted
skulduggery
jive
treacherous
disfavour
deceptivity
misenunciation
discredible
unconstructively
feral
skank
cozen
delude
play dirty
deceive
corrupt
miscredit
lead on
mispronunciation
crooked
shonky
every trick in the book
begeck
fraudulently
guile
crooked as a dog's hind leg
knavery
unbenevolently
mendaciously
unbehaving
deceptiveness
ungrammatically
misrelease
shuck and jive
ungallant
traduction
mislead
sham
mullet-headed
dolose
falseheartedness
humbug
fraudulence
nonpretentious
bunco