verb
make ineffective by counterbalancing the effect of"Her optimism neutralizes his gloom"
"This action will negate the effect of my efforts"
"This action will negate the effect of my efforts"
verb
show to be invalidverb
declare invalid"The contract was annulled"
"void a plea"
"void a plea"
Antonime:
(verb) validate, formalize
Sinonime:
(verb) annul, avoid, invalidate, negate, neutralize, quash, void