废寝食 fèiqǐnshí to neglect sleep and food Definitions Defs Origin Strokes Stroke Words Sentences Sents 废 廢 fèi adjectiveverb to abolish to stop using; to abandon; to discard; to abrogate or put an end to something寝 寢 qǐn verb to sleep (bound form) to sleep; to lie down to rest; relating to sleep as in 寝室 qǐnshì or 寝具 qǐnjù食 shí verb to eat to eat; to consume; to have a meal