Example:

1. He has an aggressive dog that always barks at strangers.

2. She's very aggressive when she's playing sports.

3. He's been acting aggressively towards his brother ever since he found out about the affair.

4. I'm not sure if I can trust her because she's always so aggressive.

5. The company is taking an aggressive marketing approach with its new product launch.

6. He's been acting really aggressive lately ,and I'm starting to get worried about him.

Synonyms: assertive, forceful, vigorous, determined, resolute

Antonyms: passive, timid, gentle, meek, submissive