a.  好斗的，挑衅的

a.  有进取心的，有冲劲的；汲汲于成功的

a.  〔疾病〕侵袭性的

• aggression  

  n.  攻击性行为；敌对行为[心理] [+ towards]

  n.  侵犯；侵略 [+ against]

• an unprovoked act of aggression 

  无端的侵犯

• What would we think of a person who invades our personal space according to the author? They are aggressive.

  好斗的，挑衅之人

• We are probably immature and over-trusting, too emotional or aggressive.

• At the workplace, men use conflict as a way to position themselves, while women often avoid conflict or strive to be the peacemaker, because they don't want to be viewed as aggressive or disruptive at work.

BrE /əˈɡresɪv/

NAmE /əˈɡresɪv/