Green’s Dictionary of Slang

1. (W.I./UK black) furious, very angry; stupid.

1983		V. Bloom ‘Mashalaw’ in Touch Mi, Tell Mi 15: Aay! You know seh Joe get wrated / Weh people call ’im soh.
1999		(con. 1979–80) A. Wheatle Brixton Rock (2004) 192: Dem bwai who me drapes are idiot bwai. Dem too rarted an’ mek people walk all over dem.

2. (UK black) used as a general intensifier; thus to rahtid/rarted, for the hell of it, to a great extent.

1999		(con. 1979–80) A. Wheatle Brixton Rock (2004) 143: You jumped into that big rarted bin downstairs? [...] Man fling their dead dog and t’ing in der. [Ibid.] 191: I will join a tennis club to rarted, jus’ for the pleasure of seein’ the white man’s face hen I gi’ ’im the money to join.
2001		(con. 1981) A. Wheatle East of Acre Lane 5: Mash up his kneecap to rarted.
2020		G. Krauze What They Was 52: Whatdafuck is this Taz? It’s [i.e. a pistol] rusty to rahtid.