廢寢忘食 fèi qǐn wàng shí

DEFINITIONS

  1. to neglect sleep and forget about food (idiom)
  2. to skip one's sleep and meals
  3. to be completely wrapped up in one's work

CHARACTERS

廢 fèi abrogate, terminate, discard
寢 qǐn sleep, rest; bed chamber
忘 wàng
HSK 3
forget; neglect; miss, omit
食 shí
HSK 5
eat; meal; food; KangXi radical number 184