Green’s Dictionary of Slang

1. (orig. US) a black upwardly mobile young professional.

1986		Atlanta Journal/Constitution 3 Aug. G-1/1: Fulton’s top Buppie, [County Council Chairman] Michael Lomax.
1986		Sun. Times 12 Oct. 48: Subsequently the categorisation was refined to include the guppy (gay urban professional) and the bluppy (black urban professional).
1994		N. McCall Makes Me Wanna Holler (1995) 279: A buppie, a single black heterosexual male with a job.
2000		Observer 12 Nov. 5: They were termed ‘buppies’ (black, upwardly mobile) to go alongside the yuppies who were taking over the City. Now the buppies have moved to the countryside.
2007		N. McCall Them (2008) 24: Self-absorbed buppies, puffed-up over fancy houses and big-shot careers.

2. attrib. use of sense 1.

1991

N. George ‘Up from Integration’ in Buppies, B-Boys, Baps and Bohos (1994) 108: To label them buppie books is too pejorative [...] though they are products of an era that made black urban professionals possible.