brute

nouns

a cruelly rapacious person
beast, brute, savage, wildcat, wolf
a living organism characterized by voluntary movement
animal, animate being, beast, brute, creature, fauna

adjectives

resembling a beast; showing lack of human sensibility
"beastly desires"; "a bestial nature"; "brute force"; "a dull and brutish man"; "bestial treatment of prisoners"
beastly, bestial, brutal, brute, brutish