亡ぼう羊よう補ほ牢ろう

noun

locking the barn door after the horse has bolted; too little, too late

A yojijukugo meaning to take action only after the damage is done; equivalent to the English proverb. The literal meaning is 'mending the pen after the sheep are lost'.

• 事じ故こが起おきてから安あん全ぜん対たい策さくを強きょう化かするのは亡ぼう羊よう補ほ牢ろうだ。

  Strengthening safety measures after an accident has occurred is like locking the barn door after the horse has bolted.