Complete destruction or annihilation; devastation of an organization, place, or group to the point of collapse.
台風で漁村は壊滅的な被害を受けた。
The fishing village suffered devastating damage from the typhoon.
敵の攻撃で守備隊は壊滅した。
The garrison was annihilated by the enemy attack.
不祥事で会社の信用は壊滅的な打撃を受けた。
The scandal dealt a devastating blow to the company's credibility.