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Jyutping jyu4 duk6
Pinyin yú dú

Definitions (CC-CANTO)
  1. pernicious influence; residual poison
Definitions (Wiktionary)
  1. noun
    residual poison; pernicious vestige or influence
Examples (Wiktionary)
  1. Mandarin
    余毒
    餘毒
    yú dú
    • residual poison