retaliate

当同事抢了他的功劳后，他决定报复。

After his colleague took credit for his work, he decided to ___retaliate.

对方取消订单后，我们决定停止供货作为报复。

After they canceled the order, we decided to ___retaliate by stopping our supply.

当竞争对手降低价格后，这家公司决定以同样的方式进行报复。

After the rival lowered prices, the company decided to ___retaliate in the same way.