riff-raff

音标发音

Western Europe may have cheered the revolution, but it fears a flood of riff-raff from the east.
西歐可能會對革命歡訢鼓舞，但也擔心來自東部的貧民潮。
Littered on the grass, we seemed dingy, urban riff-raff. We defiled the scene, like sardine-tins and paper bags on the seashore.
我們呢，卻好像是一堆肮髒的城市垃圾，被衚亂丟在草地上，如同海灘上的紙袋和沙丁魚罐頭盒一樣敗壞風景。
Police harassment is minimal, “at least to start with”. Riff-raff and drunks from surrounding villages are kept away by tight security.
人們很少受到警察騷擾（至少剛開始是這樣），嚴格的安保趕走了附近村子的社會閑散人員和醉漢。

He was like the rest of us riff-raff, middle class kids from unglamorous hard working families who believed in the future.
FORBES: Getting Over Our Over-Levered Selves
The new tax may send a definite message to wealthy citizens to redistribute their wealth to the rest of the Russian riff-raff.
FORBES: Rich Russians Also Lament New Tax Hikes
Mr Evans blames the city's strict regulation of street concerts—which cynics say serves more to protect club owners from competition than to keep the riff-raff away.
ECONOMIST: Letter from the Mississippi Delta: The rebirth of the blues

If you refer to a group of people as riffraff, you disapprove of them because you think they are not respectable.