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Jyutping sei2 bat1 ming4 muk6
Pinyin sǐ bù míng mù

Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)

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Jyutping sei2 bat1 ming5 muk6
Pinyin sǐ bù míng mù

Definitions (CC-CEDICT)
  1. lit. not close one's eyes after dying (idiom)
  2. fig. to die with an unresolved grievance
Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. phrase, idiomatic
    to die with a grievance or regret