Nouns

(n)beast, wolf, savage, brute, wildcata cruelly rapacious person
(n)animal, animate being, beast, brute, creature, faunaa living organism characterized by voluntary movement

Adjectives

(s)beastly, bestial, brute, brutish, brutalresembling a beast; showing lack of human sensibility“beastly desires”, “a bestial nature”, “brute force”, “a dull and brutish man”, “bestial treatment of prisoners”