Read Edit View history 废寝忘食 fèiqǐnwàngshí HSK7 engrossed Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 废寝忘食/廢寢忘食 · fèiqǐnwàngshí · engrossed 2026/03/04 废寝忘食 / 廢寢忘食 fèiqǐnwàngshí engrossed to skip sleep and meals; to be completely wrapped up in one's work 他为了攻克这个技术难题，简直到了废寝忘食的地步。 idiom created sense Mar 4, 2026, 02:25 AM