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Jyutping mou4 gin1 bat1 ceoi1
Pinyin wú jiān bù cuī

Definitions (CC-CEDICT)
  1. no stronghold one cannot overcome (idiom); to conquer every obstacle
  2. nothing one can't do
  3. to carry everything before one
Definitions (粵典–words.hk)
  1. 形容詞
    能夠​摧毀​任何​堅​固​嘅​嘢​;​亦​都​有用​嚟​形容​某樣​嘢​力量​強大​可以​克服​任何​困難​。
    Implacable, unstoppable
    • 阿松佢真係以為自己個頭無堅不摧,諗住可以一頭扻爆塊瓦片... 結果而家入咗醫院。
      阿松佢真系以为自己个头无坚不摧,谂住可以一头扻爆块瓦片... 结果而家入咗医院。
      yue:阿松佢真係以為自己個頭無堅不摧,諗住可以一頭扻爆塊瓦片... 結果而家入咗醫院。
      A-chung really thought his head was implacable, believing he could smash a roof tile with it... and now he's in the hospital.
Definitions (Wiktionary)
  1. phrase, idiomatic
    to overrun all fortifications; to carry all before one; to be all-conquering
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    无畏无惧至会无坚不摧。
    無畏無懼至會無堅不摧。
    mou4 wai3 mou4 geoi6 zi3 wui5 mou4 gin1 bat1 ceoi1.
    • A person of no fear is thus unbeatable.
  2. Cantonese
    阿松佢真系以为自己个头无坚不摧,谂住可以一头扻爆块瓦片... 结果而家入咗医院。
    阿松佢真係以為自己個頭無堅不摧,諗住可以一頭扻爆塊瓦片... 結果而家入咗醫院。
    yue:阿松佢真係以為自己個頭無堅不摧,諗住可以一頭扻爆塊瓦片... 結果而家入咗醫院。
    • A-chung really thought his head was implacable, believing he could smash a roof tile with it... and now he's in the hospital.