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

Academic

negate

verb
nɪˈɡeɪt
 
; nɪˈɡeɪt
 
(formal)
 
1 negate something to stop something from having any effect
Synonym
nullify
Alcohol negates the effects of the drug.
2 negate something to state that something does not exist
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