Antonyms of verb negate

1 of 4 senses of negate

Sense 3
negate, contradict -- (prove negative; show to be false)
       Antonym of affirm (Sense 1)
      => confirm, corroborate, sustain, substantiate, support, affirm -- (establish or strengthen as with new evidence or facts; "his story confirmed my doubts"; "The evidence supports the defendant")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb negate

4 senses of negate

Sense 1
contradict, belie, negate -- (be in contradiction with)
       => deviate, vary, diverge, depart -- (be at variance with; be out of line with)

Sense 2
contradict, negate, contravene -- (deny the truth of)
       => disagree, differ, dissent, take issue -- (be of different opinions; "I beg to differ!"; "She disagrees with her husband on many questions")

Sense 3
negate, contradict -- (prove negative; show to be false)
       => prove, demonstrate, establish, show, shew -- (establish the validity of something, as by an example, explanation or experiment; "The experiment demonstrated the instability of the compound"; "The mathematician showed the validity of the conjecture")

Sense 4
neutralize, neutralise, nullify, negate -- (make ineffective by counterbalancing the effect of; "Her optimism neutralizes his gloom"; "This action will negate the effect of my efforts")
       => weaken -- (lessen the strength of; "The fever weakened his body")