slumper
n.— «Bay Area rap flourished in Dre’s absence, evolving from the East Coast-influenced sound of the Strictly Business era to the slower tempos and keyboard-heavy funky slumper beats of what became known as mobb music.» —“Requiem for a Mac” by Eric K. Arnold East Bay Express (California) Nov. 10, 2004. (source: Double-Tongued Dictionary)