late 14c., from un- (1) "not" + past participle of wash (v.). Replaced Middle English unwashen, from Old English unwæscen. Noun sense of "the lower class" is attested from 1830.
实用例句
1. Leftover food and unwashed dishes cover the dirty counters.
台面上又脏又乱，尽是残羹剩菜和未洗的盘子。
来自柯林斯例句
2. They looked pale and unhealthy, with unwashed hair and sunken cheeks.
他们脸色苍白，精神不振，头发脏乱，两颊深陷。
来自柯林斯例句
3. a pile of unwashed dishes
一堆未洗的碟子
来自《权威词典》
4. He was unwashed , uncombed, with his clothes half buttoned.