counterblow
/ˈkaʊntərˌbloʊ/
noun
- A blow or attack delivered in return for another; a retaliatory strike.
- In the debate, her counterblow was a sharp question that left her opponent speechless.
- The boxer landed a powerful counterblow after dodging his opponent's punch.
- The army's counterblow surprised the enemy forces and turned the tide of the battle.