warfare
n. 战争，作战；（团体、公司等之间的）斗争，竞争
例句
These clashes could develop into open warfare.
这些冲突可能会发展成公开的战争。
《柯林斯英汉双解大词典》
The debate soon degenerated into open warfare.
争论很快恶化，演变成了公开的论战。
《牛津词典》
Much of the violence is related to drugs and gang warfare.
很多暴力行为都与毒品和帮派冲突有关。
