lickpot
rascal
rogue
scallywag
knave
scalawag
rapscallion
varlet
sleazy
sleveen
impenetrable
untrustworthily
crooked as a barrel of snakes
untrustingly
booky
sysape
unphilanthropically
unpraiseworthily
nontrustworthy
shady
unworthily
unenlightenedly
rat bastard
unitively
aneugen
unsanctifiedly
slick
unwarily
uncommunicably
unfestively
unloyally
dunce
ghost
unimpassionedly
inconscionably
unlistenably
unhandsomely
unclerically
unvarnishedly
unhonourably
unconceitedly
unpunishingly
dull
uninnocently
unthankfully
unsanctimoniously
univocal
unpardonably
sievish
shadily