get even with
To exact revenge on someone. This prank may seem elaborate, but I need to get even with my brother for dumping a bucket of water on me the other day. Sheila swore that she would get even with me after she figured out that I had started the rumor about her.
get (or be) even with
inflict similar trouble or harm on someone as they have inflicted on you. informalbe/get ˈeven with somebody
(informal) cause somebody the same amount of trouble or harm as they have caused you: I’ll get even with him some day for making those nasty comments about me.