get even

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get even (third-person singular simple present gets even, present participle getting even, simple past got even, past participle (UK) got even or (US) gotten even)

1. (idiomatic, informal) To inflict trouble or harm on another in return, typically the same as that inflicted on oneself.
   • 2013, Clutch (lyrics and music), “Book, Saddle, & Go”:

     Pinkerton man, murdering bastard / I’m gonna get even, get even with you

   • 1961, 101 Dalmatians:

     But I warn you, Anita, we're through. I'm through with all of you! I'll get even. Just wait! You'll be sorry! You fools! You...YOU IDIOTS!

• reciprocate, retaliate

• taste of one's own medicine

• “get even”, in OneLook Dictionary Search.