a barbarous crime.
a ferocious beating.
a furious battle.
a pack of feral dogs.
a savage people.
a savage slap.
barbarian invaders.
barbaric practices.
brutal beatings.
cruel tortures.
fierce fighting.
fighting is crude and uncivilized especially if the weapons are efficient.
Stalin's roughshod treatment of the kulaks.
The critics crucified the author for plagiarizing a famous passage.
The press savaged the new President.
vicious kicks.
wild tribes.