Actively or attentively engaged; closely occupied physically or mentally; intent upon that which one is doing; not at leisure: opposed to idle.Active in that which does not concern one; meddling with or prying into the affairs of others; officious; importunate.In constant or energetic action; rapidly moving or moved; diligently used: as, busy hands or thoughts.Pertaining or due to energetic action; manifesting constant or rapid movement.Requiring constant attention, as a task.Filled with, active duties or employment.Careful; anxious. Chaucer.To employ with constant attention; keep engaged; make or keep busy: as, to busy one's self with books.In decoration, full of detail; overcrowded; fussy.