hostile and aggressive
truculent - aggressive
A ‘truculent’ person is not pleasant to be around. They tend to be quick to argue, hard to please, and aggressively self-assertive. Such a quarrelsome nature is not likely to get you far or win you friends in either a professional or social environment, so the word tends to be used in an exclusively negative context.
Nobody wanted Alex to be part of the task force. He has a reputation for being truculent and difficult to work with.
The truculence of that company towards us is due to a lucrative deal we made with their direct rival last year.
It’s hardly surprising that the student was expelled. She always behaved so truculently in class.