resembling a beast; showing lack of human sensibility; "beastly desires"; "a bestial nature"; "brute force"; "a dull and brutish man"; "bestial treatment of prisoners"
If you describe behaviour or a situation as bestial, you mean that it is very unpleasant or disgusting. the bestial conditions into which the city has sunk. = brutish. behaving like an animal, especially in a cruel way (bestialis, from bestia )