riff-raff

(esp 尤作 the riff-raff) n [U] (derog 贬) ill-behaved people of the lowest social class; the rabble 下等社会的为非作歹者; 乌合之众: Don't bring any riff-raff into my house! 别把不三不四的人领到我家来!

riddle, ride, ride down, ride off, ride on, ride over, rider, ridge, ridge-pole, ridge-tile, ridgeway, ridicule, ridiculous, ridiculously, ridiculousness, riding, riding-crop, riding-school, rife, riff, riffle, riffraff, rifle, rifle-range, rifleman, rifling, rift, rift valley, rig, rig-out, rigging, right, right angle, right away, Right Honourable, right of way, Right Reverend, right-handed, right-minded, right-mindedness,