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1. Take revenge for a perceived wrong
   - revenge, avenge
    
2. Make a counterattack and return like for like, especially evil for evil
   "The Israeli army retaliated for the Hamas bombing";
   - strike back

Derived forms: retaliating, retaliates, retaliated

See also: avenged, unavenged

Type of: hit, penalise [Brit], penalize, punish, sanction, strike

Encyclopedia: Retaliate