In swung rhythm, the first note of each pair is held longer than the second, giving a lilting, relaxed feel. It is central to jazz and blues and shows up in hip hop through drum machines with swing settings.
Producers often describe swing as a percentage: 50 percent is straight, around 66 percent approximates a triplet feel. Lo-fi hip hop commonly uses a light swing on hi-hats for a laid-back groove.
Using it in a prompt
Say "swung hi-hats" or "lazy swing" for a relaxed groove, or "straight eighths" when you want a tight, mechanical feel.