quisling

The villagers suspected the old shopkeeper of being a quisling after he started supplying the enemy troops.

用法提示：这里用quisling指代与敌军合作的人，是名词，表示内奸。

In the spy novel, the protagonist discovers that his trusted colleague is actually a quisling.

用法提示：这里quisling是名词，指背叛国家、与敌人合作的人。

History books label him a quisling for betraying his country during the occupation.

用法提示：这里quisling是名词，用于描述在战争时期通敌的人。