知命之年 zhīmìngzhīnián age of fifty Definitions Defs Origin Strokes Stroke Words Sentences Sents 知命 zhīmìng age of fifty The age of fifty, from the phrase 五十而知天命 wǔshí'érzhītiānmìng in the "Analects of Confucius".之 zhī particle [possessive] Connects a describing word or phrase to the noun it describes, similar to 的 de but used in formal or literary writing.年 nián noun age a person's age or a specific stage in a person's life