belligerent

Belligerent may function as either an adjective or a noun. As an adjective, it has two primary meanings, each of which corresponds to the two senses of its noun form.

The older sense (“waging war”) is generally used to refer to the actions or combatants of a nation at war, or to the nation itself ("belligerent operations"; "belligerent troops"; “the belligerent state”); it is paralleled by the earliest sense of the noun, “a nation at war” (“the belligerents assembled at the peace conference”). The second sense of belligerent (“inclined to or exhibiting assertiveness, hostility, or combativeness”), which usually applies to persons or animals, or to their attitudes or actions, likewise parallels the second sense of the noun (“a person taking part in a fight”). A related noun belligerence refers to “an aggressive or truculent attitude, atmosphere, or disposition” that can be either individual or global.