hellish (adj.)

• anarchic
• angry
• animal
• anthropophagous
• atrocious
• barbaric
• barbarous
• beastly
• bestial
• bloodthirsty
• bloody
• bloody-minded
• blustering
• blusterous
• blustery
• brutal
• brute
• brutish
• cannibalistic
• chaotic
• chthonian
• chthonic
• cruel
• cursed
• damnable
• demoniac
• demoniacal
• demonic
• devilish
• diabolic
• execrable
• fell
• feral
• ferocious
• fiendish
• fierce
• frantic
• frenzied
• furious
• ghoulish
• infernal
• inhuman
• inhumane
• insensate
• mad
• mindless
• murderous
• purgatorial
• raging
• ravening
• rip-roaring
• ruthless
• sadistic
• sanguinary
• sanguineous
• satanic
• savage
• stormy
• subhuman
• sulfurous
• tempestuous
• troublous
• truculent
• tumultuous
• turbulent
• unchristian
• uncivilized
• ungodly
• unhuman
• uproarious
• vicious
• wild
• wolfish