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Jyutping got3 hau4
Pinyin gē hóu

Definitions (粵典–words.hk)
  1. 動詞
    割斷​頸動脈​或者​氣管​令人​死亡
    to slit a throat to kill someone
Definitions (Wiktionary)
  1. verb, figuratively, neologism
    to ruthlessly attack (nonphysically); to censure
  2. verb
    to cut a person's throat; to slit a person's throat
    • 一名女子被割喉殺害
      一名女子被割喉杀害
      yī míng nǚ zǐ bèi gē hóu shā hài
      A woman had her throat slit and was killed
  3. adj, attributive, neologism
    cutthroat; ruthless; murderous
Examples (粵典–words.hk)
  1. Cantonese
    《东阳报》啱啱推出果阵,用割喉战顶烂市,只系卖两蚊,搞到其他对手要陪佢减价,甚至要送利是。
    《東陽報》啱啱推出果陣,用割喉戰頂爛市,只係賣兩蚊,搞到其他對手要陪佢減價,甚至要送利是。
    dung1 joeng4 bou3 aam1 aam1 teoi1 ceot1 go2 zan2, jung6 got3 hau4 zin3 ding2 laan6 si5, zi2 hai6 maai6 loeng5 man1, kei4 taa1 deoi3 sau2 jiu3 pui4 keoi5 gaam2 gaa3, sam6 zi3 jiu3 sung3 lai4 si6.
    • "Oriental Sun Post" made cut-throat price competition by selling at $2 only when it started publication, forced its competitor to follow, and even gave red pockets.
Examples (Wiktionary)
  1. Mandarin
    一名女子被割喉杀害
    一名女子被割喉殺害
    yī míng nǚ zǐ bèi gē hóu shā hài
    • A woman had her throat slit and was killed