hostility
/hɒˈstɪlətɪ/noun
(pl. -ies)［mass noun］
1- hostile behaviour; unfriendliness or opposition敌对行为; 不友善; 反对：
their hostility to all outsiders.
他们对所有外人的敌意。
1.1
- count noun
hostilities
acts of warfare战争行动： he called for an immediate cessation of hostilities.
他要求立即停止战争行动。
词源
late Middle English: from French hostilité or late Latin hostilitas, from Latin hostilis （see HOSTILE）.