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Jyutping si2 dau2
Pinyin shǐ dòu

Definitions (粵典–words.hk)
  1. 動詞、舊式
    渣​;​唔​好​;​質素​低
    inferior; of poor quality
  2. 近義詞
    屎、廢、渣

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Jyutping si2 dau3
Pinyin shǐ dòu

Definitions (CC-CANTO)
  1. bad, poor quality