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Jyutping jat1 zuk1 zik1 faat3
Pinyin yī chù jí fā

Definitions (CC-CEDICT)
  1. could happen at any moment
  2. on the verge
Definitions (粵典–words.hk)
  1. 語句
    有​嘢​刺激​到​就​會​即刻​發生
    to be triggered in an instant; to be imminent
    • 呢兩個國家嘅戰爭一觸即發。
      呢两个国家嘅战争一触即发。
      ni1 loeng5 go3 gwok3 gaa1 ge3 zin3 zang1 jat1 zuk1 zik1 faat3.
      The war between these 2 countries would be triggered in an instant.
Definitions (Wiktionary)
  1. phrase, idiomatic
    could break out or flare up at any time (of a situation); on the verge of crisis; in a tense and volatile situation
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    一触即发
    一觸即發
    jat1 zuk1 zik1 faat3
    • on the verge
  2. Cantonese
    呢两个国家嘅战争一触即发。
    呢兩個國家嘅戰爭一觸即發。
    ni1 loeng5 go3 gwok3 gaa1 ge3 zin3 zang1 jat1 zuk1 zik1 faat3.
    • The war between these 2 countries would be triggered in an instant.
  3. Cantonese
    大战一触即发。
    大戰一觸即發。
    daai6 zin3 jat1 zuk1 zik1 faat3.
    • The war is on the brink.