n.

1. 敌意，敌视[U][（+to/toward）]
   We had no hostility toward the new neighbor.

   我们对新邻居毫无敌意。

2. 战争行动；战争；战斗[P]
   Hostilities ended when the treaty was signed.

   条约签订后战争结束了。

n.

▸ (hostilities) acts of warfare:

a cessation of hostilities.