Green’s Dictionary of Slang

1. a general derog. term: disgusting, ugly, smelly etc.

1985		M. Munro Patter 46: ming To ming is to stink; a ming is a bad smell, Mingin means stinking but can also be used to describe anything bad.
1993–2003		Urban Dict. 🌐 cod trench The furry cup. I about boked when I got down to her cod trench, fucking minging man!
1998		A. Warner Sopranos 101: Ma sister bit into something [...] crunchy [...] it was like a cyst that’d been in the living chicken! Minging, eh?
1999		Guardian 14 May 30: What’s the point of doing the mingin’ thing if I can’t clean up, Rodds?
2004		C. Brookmyre Be My Enemy 249: That’s the most mingin’ thing I’ve ever seen.
2010		M. Haines Born into Fire 45: They would pick up some of our kit and exclaiming ‘THIS IS MINGING!’ They throw it across the room. (Minging being British Infantry speak for dirty.) Of course it wasn’t ‘minging’ at all, but we had to start all over again!
2015		I. Welsh Decent Ride 40: How is it his ma n him live here, n my ma n me live in a mingin scheme?

2. of a person, unattractive.

2001

OnLine Dict. of Playground Sl. 🌐 mingin(g) adj. ugly: often applied to a swamp donkey.

3. very drunk.

2001

OnLine Dict. of Playground Sl. 🌐 mingin(g) adj. [...] 3) extremely drunk.