Learn how to say Negate correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word negate:
1make ineffective; nullify:
alcohol negates the effects of the drug
2 Logic & Grammar make (a clause, sentence, or proposition) negative in meaning.
3deny the existence of:
negating the political nature of education
early 17th century (in negate (sense 1), negate (sense 3)): from Latin negat- ‘denied’, from the verb negare