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Definition of nullify verb from the Oxford Advanced American Dictionary

     

    nullify

     verb
    verb
    NAmE//ˈnʌləˌfaɪ//
     
    (formal)Verb Forms present simple I / you / we / they nullify
     
    he / she / it nullifies
     
    past simple nullified
     
    -ing form nullifying
     
     
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  1. 1nullify something to make something such as an agreement or order lose its legal force synonym invalidate Judges were unwilling to nullify government decisions.
  2. 2nullify something to make something lose its effect or power synonym negate An unhealthy diet will nullify the effects of training.
nullification noun [uncountable, countable]
 
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See nullify in the Oxford Advanced Learner's Dictionary
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