aggression

noun

1. violent action that is hostile and usually unprovoked

Synonym: hostility

2. deliberately unfriendly behavior

3. the act of initiating hostilities

4. a disposition to behave aggressively

5. a feeling of hostility that arouses thoughts of attack

Synonym: aggressiveness

1. 好斗性；攻击性
Aggression is a quality of anger and determination that makes you ready to attack other people.

e.g. Aggression is by no means a male-only trait.
好斗性绝非男性才具有的特征。

2. 侵略；侵犯
Aggression is violent and attacking behaviour.

e.g. The raid was an unjustifiable act of aggression.
那次偷袭是一种不正当的侵略行径。
e.g. ...the threat of massive military aggression.
大规模军事侵略的威胁