前功盡棄 [－－尽弃]

Jyutping cin4 gung1 zeon6 hei3
Pinyin qián gōng jìn qì

Definitions (CC-CEDICT)
  1. to waste all one's previous efforts (idiom)
  2. all that has been achieved goes down the drain
Definitions (粵典–words.hk)
  1. 語句
    以前​嘅​成果​全部​廢棄​，​變得​冇​用
    to waste all previous efforts
    • 你而家放棄就前功盡廢㗎喇！
      你而家放弃就前功尽废㗎喇！
      nei5 ji4 gaa1 fong3 hei3 zau6 cin4 gung1 zeon6 fai3 gaa3 laa3!
      If you give up now, all your efforts will be wasted.
  2. 參看
    前功盡廢
Definitions (Wiktionary)
  1. phrase, idiomatic
    all previous achievements go down the drain; all the previous effort is wasted
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）
Examples (Wiktionary)
  1. Mandarin
    前功尽弃
    前功盡棄
    qián gōng jìn qì
    • all the previous effort is wasted