redeem /rɪˈdiːm/ verb [T]
IMPROVE › to make something seem less bad: He tried to redeem his reputation by working extra hard. a redeeming feature
redeem yourself › to do something that makes people have a better opinion of you after you have done something bad: He was two hours late, but he redeemed himself by bringing presents.
GET SOMETHING › to exchange something for something else
RELIGION › to save someone from evil, especially according to the Christian religion