Problems and difficulties

• Violent behavior, to Brits
• Belligerent, in Britspeak
• Like violent moshing, slang
• Belligerent, in British slang
• Big trouble
• ___ Crag (climbing challenge on Nickelodeon's "Guts")
• Belligerent behavior, in British slang

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
aggro \aggro\ n. 1. aggravation or aggression. [informal British usage] I skipped it because it was too much aggro

Wikipedia Word definitions in Wikipedia
Aggro is a slang term meaning aggravation or aggression . "Aggro" may also refer to:

WordNet Word definitions in WordNet
n. (informal British usage) aggravation or aggression; "I skipped it because it was too much aggro"