aggressive
Draconian
Tartarean
abrupt
animal
antagonistic
anthropophagous
atrocious
bad-tempered
barbaric
barbarous
battling
bearish
beastly
bellicose
belligerent
bestial
bloodthirsty
bloody
bloody-minded
bluff
blunt
brash
browbeating
brusque
brutal
brutalized
brute
brutish
bullying
cannibalistic
cavalier
chauvinist
chauvinistic
churlish
combative
contentious
contumelious
cowing
cruel
cruel-hearted
crusty
curt
deadly
defiant
demoniac
demoniacal
destructive
boastful
ferocious
imperious
insolent
malevolent
masterful
quarrelsome
rapacious
resentful
revengeful
surly
unfeeling
unforgiving
ungrateful
vindictive
warlike