乐天知命 lètiānzhīmìng to be content with one's lot Definitions Defs Origin Strokes Stroke Words Sentences Sents 乐天 樂天 lètiān optimistic carefree and happy-go-lucky; content with one's lot and accepting of the natural course of events知命 zhīmìng to know one's destiny To understand that everything is determined by fate and to be able to accept one's lot in life.