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Jyutping mong4 caan1
Pinyin wàng cān

Definitions (CC-CEDICT)
  1. to forget one's meals
Examples (粵典–words.hk)
  1. Cantonese
    为咗入大学,佢呢半年都废寝忘餐噉读书。
    為咗入大學,佢呢半年都廢寢忘餐噉讀書。
    wai6 zo2 jap6 daai6 hok6, keoi5 ni1 bun3 nin4 dou1 fai3 cam2 mong4 caan1 gam2 duk6 syu1.
    • For the sake of entering university, he was totally absorbed with his studying in the last six months, neglecting meals and rest.
  2. Cantonese
    废寝忘餐
    廢寢忘餐
    • to forget to eat and sleep since one is completely absorbed in working