Green’s Dictionary of Slang

1. a chalked-up, cartoon-style picture of a rudimentary human head ‘looking over’ an equally basic brick wall, always depicted with the slogan Wot, no... [ety. unknown].

1945		Sun. Express (London) 2 Dec. 2/3: What is the origin of that peculiarly laughable figure called Chad we see so often scribbled across our walls?
2001		OnLine Dict. of Playground Sl. 🌐 Chad n. A cartoon ‘egg’ peering over a brick wall, usually saying ‘Wot no school?’ or similar.

2. (US campus) a derog. term for a male member of a fraternity, usu. in the context of unruly behaviour .

1992

Eble Campus Sl. Apr. 2: chad – stereotypical member of a fraternity. Usually has derogatory connotations. ‘What’s going on in the Pit? There’s a bunch of chads running around out there.’.

3. (US) in specific use of sense 3, a derog. generic used by incels for the ‘alpha-male’ type: blonde, handsome, attractive to women.

2021

K. Preston et al.‘The Black Pill’ in Men & Masculinities 18 May 🌐 “Chads,” an incel-term used to describe the most attractive men. In general, they define Chads as white, tall, and muscular, with attractive faces and well-defined jawlines [...] Incels suggest that dating apps provide women with sexual/romantic access to a near limitless supply of Chads.