You don't expect the likes of me to fight dirty.

"You fight dirty," she told him after a moment, and his teeth flashed in a smile.

He was probably very good at fighting dirty, she thought, her heart kicking into a slightly faster beat.

And if she wouldn't listen, then he didn't mind fighting dirty.

Nothing quite like fighting dirty, especially when the competition doesn't know about it.

Now I think we need somebody who can fight dirty.

Duncan, you know, might fight dirty if he had a chance.

It was time for the good guys to show they could fight dirty.

He always fights dirty, so I'd stay away from him.

Clegg has learned the hard way that to win in politics you have to fight dirty.