Warlike; given to waging war; characterized by a tendency to wage or carry on war.
Of warlike character; constituting or tending to an infraction of peace: as, a belligerent. tone of debate.
Actually engaged in war: as, the belligerent powers.
Pertaining to war, or to those engaged in war: as, belligerent rights, etc.
noun.
A nation, power, or state carrying on war; also, a person engaged in fighting.