brute

(noun) a cruelly rapacious person. Synonyms: beast, wolf, savage, wildcat.

(noun) a living organism characterized by voluntary movement. Synonyms: animal, animate being, beast, creature, fauna.

(adj) resembling a beast; showing lack of human sensibility. Synonyms: beastly, bestial, brute(prenominal), brutish, brutal. Examples: "Beastly desires." "A bestial nature." "Brute force." "A dull and brutish man." "Bestial treatment of prisoners."