大だい事じ故こ

noun

serious accident; major incident

Refers to a large-scale accident or disaster, often involving significant damage, casualties, or disruption. Used in news reports and formal contexts.

• 高こう速そく道どう路ろで大だい事じ故こが発はっ生せいした。

  A serious accident occurred on the expressway.

• 大だい事じ故こを防ふせぐために、安あん全ぜん対たい策さくを強きょう化かする必ひつ要ようがある。

  We need to strengthen safety measures to prevent major incidents.