Definition of «killy»

"Killy" is a slang term primarily used in UK drill and road culture to refer to a close friend, associate, or "brother" who is perceived as loyal and potentially dangerous. It is derived from "killer" but is frequently used as a term of endearment or camaraderie within specific urban subcultures. The word carries a tone of street-level respect and suggests that the person is a "real one" who has your back in a conflict. While it has aggressive roots, in social media comments it is often used enthusiastically to praise a rapper or creator's performance.