I. verb
1.
Synonyms: avenge , revenge, venge, vindicate
2.
Synonyms: neutralize , annul, cancel (out), counteract, countercheck, frustrate, negate, negative
II. noun
Synonyms: reparation , amends, compensation, indemnification, indemnity, quittance, recompense, reprisal, restitution
Related Word: balancing, offsetting; retaliation, vengeance