difficult
dirty
filthy
grotty
hard
hateful
lousy
mean
soiled
unclean
Fescennine
Rabelaisian
abhorrent
abominable
abusive
acute
annoying
arrant
atrocious
awful
awkward
bad
bad-tempered
baleful
barfy
base
bawdy
beastly
below contempt
beneath contempt
bitchy
black
blameworthy
blue
boorish
brackish
brutal
caddish
cantankerous
churlish
cloying
coarse
contemptible
crabbed
cranky
crappy
critical
crotchety
crude
cruel
cussed
dangerous
deplorable
despicable
detestable
dire
nastier
nastiest
horrid
stupid
ugly
unpleasant
vicious