私定终身 sīdìngzhōngshēn to elope Origin Definitions Defs Strokes Stroke Words Sentences Sents 私 sī adverbverb secretly (bound form) secretly; privately; in a hidden or clandestine manner定 dìng verb to decide to fix; to set; to determine; to reach a decision终身 終身 zhōngshēn marriage one's marriage; a lifelong union