廢寢忘餐 (fai3 cam2 mong4 caan1) — plagued with anxiety (lit., "losing sleep and forgetting to eat") in Cantonese
fai˗₃廢camˊ²寢mongˎ₄忘caanˉ¹餐简 废寝忘餐
Mandarin Pinyin: fei4 qin3 wang4 can1
Meaning of 廢寢忘餐
nounplagued with anxiety (lit., "losing sleep and forgetting to eat")