大意失荊州 [－－－荆－]

Jyutping daai6 ji3 sat1 ging1 zau1
Pinyin dà yì shī jīng zhōu

Definitions (Wiktionary)
  1. phrase, idiomatic
    to have a temporary lapse in judgement that results in a major defeat; make a bad call and lose the farm
    • 我們絕對不能因輕敵而大意失荊州。
      我们绝对不能因轻敌而大意失荆州。
      wǒ men jué duì bù néng yīn qīng dí ér dà yì shī jīng zhōu ．
      We absolutely must not regard the enemy too lightly, and thereby make a bad call and lose the farm.

大意失荊州 [－－－荆－]

Jyutping
Pinyin dà yi shī jīng zhōu

Definitions (CC-CEDICT)
  1. lit. to lose Jingzhou due to carelessness (idiom)
  2. fig. to suffer a major setback due to negligence
Examples (Wiktionary)
  1. Mandarin
    我们绝对不能因轻敌而大意失荆州。
    我們絕對不能因輕敵而大意失荊州。
    wǒ men jué duì bù néng yīn qīng dí ér dà yì shī jīng zhōu ．
    • We absolutely must not regard the enemy too lightly, and thereby make a bad call and lose the farm.