aggression
/əˈgreʃən/noun
mass noun
1- hostile or violent behaviour or attitudes towards another; readiness to attack or confront侵犯; 挑衅：
his chin was jutting with aggression
他挑衅地伸出下巴
territorial aggression between individuals of the same species.
同物种个体间的领地侵犯。
1.1
- the action of attacking without provocation, especially in beginning a quarrel or war侵犯行为, 侵略：
the dictator resorted to armed aggression
这个独裁者诉诸武装侵略
he called for an end to foreign aggression against his country.
他呼吁停止对其国家的外来侵略。
1.2
- forceful and sometimes overly assertive pursuit of one's aims and interests（有力但有时过分武断的）追名逐利; 争斗。
词源
early 17th cent. （in the sense 'an attack'）： from Latin aggressio（n-）, from aggredi 'to attack'， from ad- 'towards'+gradi 'proceed， walk'.