MEANING:

To fight against an opponent by using the same methods or weapons that the opponent uses

EXAMPLE SENTENCES:

It is from there I adopted the tactic of fighting fire with fire – its the only thing these people understand.

And if the end result isn’t exactly my idea of a civilized political discourse (I’ll reserve judgement for now) it clearly is a powerful and successful example of fighting fire with fire.

‘She has developed a coping mechanism of fighting back, fighting fire with fire,’ Mr Mott said.