American English

Definition of negate verb from the Oxford Advanced American Dictionary



    (formal)Verb Forms present simple I / you / we / they negate
    he / she / it negates
    past simple negated
    -ing form negating
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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
See the Oxford Advanced Learner's Dictionary entry: negate