Meaning: aggressive, violent
- If you're near a British pub around closing time, be careful. People who've had a few too many drinks can get pretty aggro and they might be looking for a fight.
- These young guys think they have to look tough and do this whole aggro thing to get some respect.
Variety: This slang is typically used in British English but may be used in other varieties of English too.
The guys were feeling aggro, so they went out