Sentence:  “The Chuckster say you two be finding <WSD>aggro</WSD> idiot who kilt Long,” said Dude. / I thought I understood but looked at Charles for help. / “<WSD>Aggro</WSD> means pissed off.” translated Charles. He still hadn't cracked a smile. Tardiness made Charles <WSD>aggro</WSD>. 
Meaning of the word marked with <WSD> tags:  Angry.