The Collaborative International Dictionary of English v.0.48:
Belligerently \Bel*lig"er*ent*ly\, adv. In a belligerent manner; hostilely. [1913 Webster]WordNet (r) 3.0 (2006):
belligerently adv 1: with hostility; in a belligerent hostile manner; "he pushed her against the wall belligerently" [syn: belligerently, hostilely]