belligerent
Concise Oxford English Dictionary © 2008 Oxford University Press:
belligerent/bəˈlɪʤərənt/
▶adjective hostile and aggressive.
■ engaged in a war or conflict.
▶noun a nation or person engaged in war or conflict.– derivatives
belligerently adverb.
belligerently adverb.
– origin C16: from L. belligerant-, belligerare ‘wage war’, from bellum ‘war’.
'belligerent' also found in these Oxford entries:

