流于形式 liúyúxíngshì to become a mere formality Origin Definitions Defs Strokes Stroke Words Sentences Sents 流于 流於 liúyú to degenerate into To turn toward or result in a negative state; to degenerate into or become restricted to a particular (usually superficial) condition.形式 xíngshì noun form the external manner, style, or method of presentation, especially as contrasted with content 内容 nèiróng; formal