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Jyutping muk1 zeoi2
Pinyin mù zuǐ

Definitions (粵典–words.hk)
  1. x

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Jyutping muk6 zeoi2
Pinyin mù zuǐ

Definitions (CC-CANTO)
  1. to describe someone with no sense of humour; a fool
Definitions (Kaifangcidian)
  1. 呆子
  2. 傻子
  3. 白癡 – 白痴