barbarous
Concise Oxford English Dictionary © 2008 Oxford University Press:
barbarous /ˈbɑːb(ə)rəs/
▶adjective
- 1 exceedingly brutal.
- 2 primitive; uncivilized.
– derivatives
barbarously adverb,
barbarousness noun.
barbarously adverb,
barbarousness noun.
'barbarous' also found in these Oxford entries:

