Green’s Dictionary of Slang

(US black/teen) very, extremely, to a great extent, defined by a v. or adj. e.g. unhappy much?

1904		Sun. Times (Perth) 4 Dec. 4/8: These pomes wot’s written about the girls / Gives me the needle much.
1964		in Current Sl. (1967) I:4 4/1: Fly much, v. To act foolish.
1972		B. Rodgers Queens’ Vernacular 139: much (adv) 1. to a great extent; modifies adjectives.
1988		(con. 1930s) C.E. Lincoln The Avenue, Clayton City (1996) 8: Miss Poochie Pie [...] she’s what you call a much right woman. She’s got as much right to be mine as she has to be his.
1989		D. Waters Heathers [film script] God, Veronica, drool much? His name’s Jason Dean. He’s in my American History.
1999		M. Adams ‘Slayer Sl.’ (Pt 2) in Verbatim Autumn n.p.: Cordelia, episode after episode, proves herself the mistress of much, and she prefers to combine it with adjectives, as in ‘Pathetic much?’ and ‘Morbid much?’ Only once before, to my knowledge, has much modified simple attribution: in Heathers, a film that apparently impressed itself on the BTVS writing team’s collective memory, a character asks, ‘Jealous much?’.
1999		USA Today 23 Dec. 04D: ‘Much’ means ‘a lot’ or ‘intensely’ -- as in ‘pathetic much’ or ‘sarcastic much’.
2021		P Howard Braywatch 124: It was just, like, oh my God – hypocrites much?
2023		X 29 Nov. 🌐 Bibles, Korans, or the Torah were never in a public-school library to begin with. [...] Propaganda much?