I . a.
1.
Carrying on war, engaged in war, waging war, contending, in conflict, at war, in arms.
2.
Of ~s, pertaining to parties at war.
3.
Antagonistic, rival, contending, hostile, conflicting, opposed, adverse.
4.
Warlike, hostile.
5.
Bellicose, pugnacious, contentious, quarrelsome, full of fight.
II . n.
Belligerent state or nation, party to war, contending party, antagonist, rival, combatant, opponent.