Definition of negate verb from the Oxford Advanced Learner's Dictionary

      

    negate

     verb
    verb
    BrE BrE//nɪˈɡeɪt//
     
    ; NAmE NAmE//nɪˈɡeɪt//
     
    (formal)Verb Forms present simple I / you / we / they negate
    BrE BrE//nɪˈɡeɪt//
     
    ; NAmE NAmE//nɪˈɡeɪt//
     
    he / she / it negates
    BrE BrE//nɪˈɡeɪts//
     
    ; NAmE NAmE//nɪˈɡeɪts//
     
    past simple negated
    BrE BrE//nɪˈɡeɪtɪd//
     
    ; NAmE NAmE//nɪˈɡeɪtɪd//
     
    past participle negated
    BrE BrE//nɪˈɡeɪtɪd//
     
    ; NAmE NAmE//nɪˈɡeɪtɪd//
     
    -ing form negating
    BrE BrE//nɪˈɡeɪtɪŋ//
     
    ; NAmE NAmE//nɪˈɡeɪtɪŋ//
     
     
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  1. 1negate something to stop something from having any effect synonym nullify Alcohol negates the effects of the drug.
  2. 2negate something to state that something does not exist
  3. Word Origin early 17th cent.: from Latin negat- ‘denied’, from the verb negare.
See the Oxford Advanced American Dictionary entry: negate