retaliate - definition and synonyms

verb [intransitive] 

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present tense
present participleretaliating
past tenseretaliated
past participleretaliated
  1. to do something harmful or unpleasant to someone because they have done something harmful or unpleasant to you
    retaliate by doing something:

    They say they will retaliate by halting British imports.

    retaliate against someone for something:

    They have threatened to retaliate against the US for the bombing raid.