What does fight fire with fire mean?

What is the definition of fight fire with fire?

"fight fire with fire" means:

(idiom) use the same methods as your enemy

Example Sentences:

When Shania’s boyfriend kissed another girl, she decided to fight fire with fire, so she cheated on him.

A: My ex-wife is suing me!
B: Why?
A: She says I have to pay her money!
B: You should fight fire with fire! Sue her!

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Fight fire with fire


fight fire with fire

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