废寝忘食 Save Sign in to save words Traditional (Taiwan): 廢寢忘食 On the HSK 7-9 vocabulary list, at CEFR level C2. fèiqǐnwàngshí ㄈㄟˋ ㄑㄧㄣˇ ㄨㄤˋ ㄕˊ to skip one's sleep and meals to be completely wrapped up in one's work idiom Character by character 废(fèi)abolish 寝(qǐn)lie down to sleep or rest 忘(wàng)forget 食(shí)eat A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0 国际中文教育中文水平等级标准, 中华人民共和国教育部, MIT