发愤忘食 fāfènwàngshí to work so hard as to forget to eat Origin Definitions Defs Strokes Stroke Words Sentences Sents 发愤 發憤 fāfèn to make a determined effort to make a firm resolution or a determined effort; to be spurred to action忘 wàng verb to forget to fail to remember; to overlook or neglect食 shí verb to eat to eat; to consume; to have a meal