To retaliate (against someone else) for a wrong done to oneself; to seek or exact revenge (against someone). Tiffany is always gossiping about me, so I took revenge on her by starting a nasty rumor about her relationship with one of our teachers. I see the growth of this extremist movement as largely being citizens taking revenge against the established government, which they feel has betrayed or abandoned them. Taking revenge will never give you a sense of peace or closure—you'll remain just as angry as before, and it will bring suffering to someone else along with you.