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Jyutping kui2 bat1 sing4 gwan1
Pinyin kuì bù chéng jūn

Definitions (CC-CEDICT)
  1. (of troops) to be utterly routed and dispersed
Definitions (粵典–words.hk)
  1. 動詞
    輸到​成支​軍隊​都​唔​成形​,​形容​慘敗​。
    to be routed
    • 尋日我同阿松捉棋,殺到佢完全潰不成軍。
      寻日我同阿松捉棋,杀到佢完全溃不成军。
      cam4 jat6 ngo5 tung4 aa3 cung2 zuk1 kei2, saat3 dou3 keoi5 jyun4 cyun4 kui2 bat1 sing4 gwan1.
      Yesterday I played chess with A-chung. I totally routed him.
Definitions (Wiktionary)
  1. phrase, idiomatic
    to be utterly routed; to be soundly defeated
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    寻日我同阿松捉棋,杀到佢完全溃不成军。
    尋日我同阿松捉棋,殺到佢完全潰不成軍。
    cam4 jat6 ngo5 tung4 aa3 cung2 zuk1 kei2, saat3 dou3 keoi5 jyun4 cyun4 kui2 bat1 sing4 gwan1.
    • Yesterday I played chess with A-chung. I totally routed him.