warfare noun
ADJ. open Rivalry between football fans developed into open warfare. | conventional, modern | biological, chemical, germ, nuclear | class, gang, internecine, tribal | guerrilla, siege, trench | aerial, air, naval, submarine | jungle, mountain | economic, ideological, psychological a subtle form of psychological warfare
VERB + WARFARE engage in
PREP. ~ against warfare against other tribes | ~ between warfare between gangs
You can also check other dicts: warfare (English, 中文解释 ), wordnet sense, Collins Definition