流于 Traditional form: 流於 Pinyin (reading): liúyú Definitions: to change (for the worse) Characters: 流 - to flow, to drift, to circulate; class 于 - at, in, on; to, from; alas! Traditional characters: 流 - to flow, to drift, to circulate; class 於 - at, in, on; to, from; alas!