An adjective used to brand something, such as an item, object, activity, TV show, even a moral choice etc, that would stereotypically appeal to a chav e.g: Burberry, Bling, casual sex and associated low morals, Little Britain the list goes on.
The word is pretty much always used in a negative sense by non-chavs, as to them the thing in question is undesirable.
Guy 1: These trainers are cool.
Guy 2: Nike? It's a bit chavvy isn't it?
Guy 1: Oh yeah, suppose so *puts down trainer in disgust*
One who is truly in touch with the skank, ned, chav and cheap jewelery.
Likely to have muffin effect waistlines and muffin effect cleavage and/or muffin effect cankles.
Blasphemy is another common symptom.