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Jyutping jat1 san1 si6 daam2
Pinyin yī shēn shì dǎn

Definitions (CC-CEDICT)
  1. devoid of fear (idiom)
  2. intrepid
Definitions (粵典–words.hk)
  1. 形容詞
    形容​人膽識​過人
    gallant, brave
    • 趙雲大擺空城計嚇走曹操,真不愧係一身是膽。
      赵云大摆空城计吓走曹操,真不愧系一身是胆。
      ziu6 wan4 daai6 baai2 hung1 sing4 gai3 haak3 zau2 cou4 cou1, zan1 bat1 kwai5 hai6 jat1 san1 si6 daam2
      Zhao Yun set up the empty fort strategy to scare Cao Cao away, really proving himself one gallant man.
Definitions (Wiktionary)
  1. phrase, idiomatic
    to know no fear; to be absolutely fearless
    (syn.) 浑身是胆, 渾身是膽
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    赵云大摆空城计吓走曹操,真不愧系一身是胆。
    趙雲大擺空城計嚇走曹操,真不愧係一身是膽。
    ziu6 wan4 daai6 baai2 hung1 sing4 gai3 haak3 zau2 cou4 cou1, zan1 bat1 kwai5 hai6 jat1 san1 si6 daam2
    • Zhao Yun set up the empty fort strategy to scare Cao Cao away, really proving himself one gallant man.