benefiting the enemy
Used in contexts such as war, competition, or politics to describe actions or situations that inadvertently help the opposing side.
The operation was regarded as an act that benefited the enemy.
情報漏洩は利敵につながる。
Information leaks lead to benefiting the enemy.
act that benefits the enemy
Compound of 利 (り, 'benefit') and 敵 (てき, 'enemy'). The exact historical derivation is uncertain, but the meaning is transparent from its components.