bestial
Concise Oxford English Dictionary © 2008 Oxford University Press:
bestial /ˈbɛstɪəl/
▶adjective of or like a beast.
■ savagely cruel and depraved.
– derivatives
bestialize (or bestialise) verb,
bestially adverb.
bestialize (or bestialise) verb,
bestially adverb.
– origin ME: via OFr. from late L. bestialis, from L. bestia ‘beast’.
'bestial' also found in these Oxford entries:

