feral (adj.)
- abandoned
- amok
- animal
- anthropophagous
- atrocious
- baneful
- barbaric
- barbarous
- beastly
- berserk
- bestial
- bloodthirsty
- bloody
- bloody-minded
- brutal
- brute
- brutish
- cannibalistic
- cinerary
- cruel
- deadly
- deathly
- delirious
- demoniac
- demoniacal
- destructive
- devilish
- diabolic
- dismal
- distracted
- ecstatic
- enraptured
- fatal
- fell
- ferine
- ferocious
- fiendish
- fierce
- frantic
- frenzied
- funerary
- funereal
- furious
- haggard
- hellish
- howling
- hysterical
- infernal
- inhuman
- inhumane
- internecine
- intoxicated
- killing
- lethal
- mad
- malign
- malignant
- maniac
- merciless
- mortal
- mortuary
- mournful
- murderous
- noncivilized
- orgiastic
- pernicious
- pitiless
- possessed
- rabid
- raging
- roaring
- ruthless
- sadistic
- sanguinary
- sanguineous
- satanic
- savage
- sepulchral
- subhuman
- swinish
- truculent
- unchristian
- uncivilized
- uncontrollable
- ungentle
- unhuman
- untamed
- vicious
- violent
- virulent
- wild
- wild-eyed
- wolfish
