1. (a.) Of or pertaining to a brute; as, brutal nature.

2. (a.) Like a brute; savage; cruel; inhuman; brutish; unfeeling; merciless; gross; as, brutal manners.

Adamic Circean Draconian Gothic Herculean Neanderthal Tartarean abominable abstruse animal animalian animalic animalistic anthropophagous arduous arrant atrocious awful baneful barbarian barbaric barbarous base beastlike beastly beneath contempt bestial bitter blameworthy bloodthirsty bloody bloody-minded bodily boorish brutalized brute brutelike brutish cannibalistic carnal carnal-minded coarse cold-blooded complex contemptible crass critical crude cruel cruel-hearted deadly death-bringing deathful deathly delicate demanding demoniac demoniacal deplorable despicable destructive detestable devilish diabolic difficile difficult dire disgusting dreadful dumb earthy egregious enormous exacting fallen fatal fell feral ferine ferocious fetid fiendish fiendlike fierce filthy flagrant fleshly formidable foul fulsome grievous gross hairy hard hard-earned hard-fought harsh hateful heartless heinous hellish horrible horrid ill-bred ill-mannered impolite inclement infamous infernal inhuman inhumane insensitive instinctive instinctual intemperate internecine intricate jawbreaking kill-crazy killing knotted knotty laborious lamentable lapsed lethal loathsome lousy malign malignant material materialistic mean merciless mindless monstrous mortal murderous nasty nefarious no picnic noisome noncivilized nonrational nonspiritual not easy notorious obnoxious odious offensive operose orgiastic outlandish outrageous pernicious physical pitiable pitiful pitiless postlapsarian primitive rank regrettable remorseless reprehensible repulsive rigorous rotten rough rough-and-ready rude rugged rustic ruthless sad sadistic sanguinary sanguineous satanic savage scandalous schlock scurvy set with thorns severe shabby shameful sharkish shocking shoddy slavering sordid spiny squalid steep strenuous subhuman swinish tameless terrible thorny ticklish toilsome too bad tough tricky troglodytic truculent unchristian uncivil uncivilized unclean uncombed uncouth uncultivated uncultured unfeeling ungentle unhuman unkempt unkind unlicked unpolished unrefined unspiritual unsympathetic untamed uphill vicious vile villainous virulent wicked wild woeful wolfish worst worthless wretched zoic zooidal zoologic