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Jyutping siu1 sing1 nik1 zik1
Pinyin xiāo shēng nì jī

Definitions (Wiktionary)
  1. phrase, idiomatic
    to keep silent and lie low; to vanish (from the public eye); to disappear from the scene

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Jyutping siu1 sing1 nik1 zik1
Pinyin xiāo shēng nì jì

Definitions (CC-CEDICT)
  1. to vanish without trace (idiom)
  2. to lie low
Definitions (粵典–words.hk)
  1. 動詞
    言論​或者​蹤​跡​唔​再​出​現​喺​眾​人​面前​,​隱藏起​嚟
    to no longer speak or appear in public; to hide oneself from the public
    • 佢借咗我錢之後就銷聲匿跡。
      佢借咗我钱之后就销声匿迹。
      keoi5 ze3 zo2 ngo5 cin2 zi1 hau6 zau6 siu1 sing1 nik1 zik1.
      He seemed to have vanished without trace after borrowing money from me.
  2. 參看
    消聲匿跡
Definitions (Wiktionary)
  1. phrase, idiomatic
    to keep silent and lie low; to vanish (from the public eye); to disappear from the scene
Examples (粵典–words.hk)
  1. Cantonese
    佢借咗我钱之后就销声匿迹。
    佢借咗我錢之後就銷聲匿跡。
    keoi5 ze3 zo2 ngo5 cin2 zi1 hau6 zau6 siu1 sing1 nik1 zik1.
    • He seemed to have vanished without trace after borrowing money from me.
  2. Cantonese
    销声匿迹
    銷聲匿跡
    siu1 sing1 nik1 zik1
    • to die out; to vanish