だまし討うち

noun

surprise attack; sneak attack; foul play

An attack made by deceiving the opponent, often implying a breach of trust or unfair tactics. Used in both literal combat and figurative contexts like sports or business.

• 敵てきはだまし討うちを仕し掛かけてきた。

  The enemy launched a sneak attack.

• 彼かれのやり方かたはだまし討うちも同どう然ぜんだ。

  His method is practically foul play.