If you describe the way that someone behaves as confrontational, you are showing your disapproval of the fact that they are aggressive and likely to cause an argument or dispute.
例句
The committee's confrontational style of campaigning has made it unpopular...委员会咄咄逼人的宣传方式使其不得人心。Riot police are on hand but have not been confrontational.防暴警察随时待命，但还没有出现冲突场面。