廢寢忘食 (fai3 cam2 mong4 sik6) — plagued with anxiety (lit., "losing sleep and forgetting to eat") ([港]: 廢寢忘餐) in Cantonese
fai˗₃廢camˊ²寢mongˎ₄忘sikˍ₆食简 废寝忘食
Mandarin Pinyin: fei4 qin3 wang4 shi2
Meaning of 廢寢忘食
nounplagued with anxiety (lit., "losing sleep and forgetting to eat") ([港]: 廢寢忘餐)