brutal (adj.)
- abominable
- abstruse
- animal
- animalistic
- anthropophagous
- arduous
- arrant
- atrocious
- awful
- baneful
- barbarian
- barbaric
- barbarous
- base
- beastly
- bestial
- bitter
- blameworthy
- bloodthirsty
- bloody
- bloody-minded
- bodily
- boorish
- brute
- brutish
- cannibalistic
- carnal
- coarse
- cold-blooded
- complex
- contemptible
- crass
- critical
- crude
- cruel
- deadly
- deathly
- delicate
- demanding
- demoniac
- demoniacal
- deplorable
- despicable
- destructive
- detestable
- devilish
- diabolic
- difficult
- dire
- disgusting
- dreadful
- dumb
- earthy
- egregious
- enormous
- exacting
- fallen
- fatal
- fell
- feral
- ferine
- ferocious
- fetid
- fiendish
- fierce
- filthy
- flagrant
- fleshly
- formidable
- foul
- fulsome
- grievous
- gross
- hairy
- hard
- hard-fought
- harsh
- hateful
- heartless
- heinous
- hellish
- horrible
- horrid
- ill-bred
- ill-mannered
- impolite
- inclement
- infamous
- infernal
- inhuman
- inhumane
- insensitive
- instinctive
- intemperate
- internecine
- intricate
- killing
- knotted
- knotty
- laborious
- lamentable
- lapsed
- lethal
- loathsome
- lousy
- malign
- malignant
- material
- materialistic
- mean
- merciless
- mindless
- monstrous
- mortal
- murderous
- nasty
- nefarious
- noisome
- noncivilized
- nonrational
- notorious
- obnoxious
- odious
- offensive
- operose
- orgiastic
- outlandish
- outrageous
- pernicious
- physical
- pitiable
- pitiful
- pitiless
- primitive
- rank
- regrettable
- remorseless
- reprehensible
- repulsive
- rigorous
- rotten
- rough
- rough-and-ready
- rude
- rugged
- rustic
- ruthless
- sad
- sadistic
- sanguinary
- sanguineous
- satanic
- savage
- scandalous
- scurvy
- severe
- shabby
- shameful
- shocking
- shoddy
- sordid
- spiny
- squalid
- steep
- strenuous
- subhuman
- swinish
- terrible
- thorny
- ticklish
- toilsome
- tough
- tricky
- truculent
- unchristian
- uncivil
- uncivilized
- unclean
- uncombed
- uncouth
- uncultivated
- uncultured
- unfeeling
- ungentle
- unhuman
- unkempt
- unkind
- unpolished
- unrefined
- unsympathetic
- untamed
- uphill
- vicious
- vile
- villainous
- virulent
- wicked
- wild
- woeful
- wolfish
- worst
- worthless
- wretched
- zoic
