an offensive way of referring to people of low social class or people who are not considered socially acceptable 贱民;不三不四的下等人 We don’t want to let all the riff-raff in. 我们不想让下等人进来。
More Like This Reduplicative wordsReduplicative wordsWord Originlate 15th cent. (as riff and raff): from Old French rif et raf ‘one and all, every bit’, of Germanic origin.