Entry 3 senses · 2 variants Webster, 1913 Belligerent /bəl-ĭj'-ẽr-ənt/ · Bel·lig·er·ent · IPA /bəˈlɪd͡ʒ.ə.ɹənt/ a. n. 01 a. Waging war; carrying on war. 1. Waging war; carrying on war. 2. Pertaining, or tending, to war; of or relating to belligerents; as, a belligerent tone; belligerent rights. 02 n. A nation or state recognized as carrying on war; a person engaged in warfare. 1. A nation or state recognized as carrying on war; a person engaged in warfare.