Definition of retaliate verb from the Oxford Advanced American Dictionary

     

    retaliate

     verb
    verb
    NAmE//rɪˈtæliˌeɪt//
     
    [intransitive]Verb Forms present simple I / you / we / they retaliate
     
    he / she / it retaliates
     
    past simple retaliated
     
    -ing form retaliating
     
     
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  1. 1to do something harmful to someone because they have harmed you first synonym take revenge
  2. 2 retaliate (against somebody/something) to retaliate against an attack retaliate (by doing something/with something) The boy hit his sister, who retaliated by kicking him.
retaliatory
 
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NAmE//rɪˈtæliəˌtɔri//
 
adjective retaliatory action
See the Oxford Advanced Learner's Dictionary entry: retaliate