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Jyutping daai6 sai3 ji5 heoi3
Pinyin dà shì yǐ qù

Definitions (CC-CANTO)
  1. a non-returnable situation such as loss of complete power or control; situation has become hopeless
Definitions (粵典–words.hk)
  1. 動詞
    最佳​時期​已​經過​咗​,​唔​適合​再行​動
    the best timing is gone
    • 你已經大勢已去啦,仲唔投降?
      你已经大势已去啦,仲唔投降?
      Your time is over. Surrender now!
Definitions (Wiktionary)
  1. phrase, idiomatic
    the game is as good as lost; that ship has sailed
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    大势已去
    大勢已去
    • someone' time is over
  2. Cantonese
    你已经大势已去啦,仲唔投降?
    你已經大勢已去啦,仲唔投降?
    • Your time is over. Surrender now!