1. nullify - verb
· declare invalid; "The contract was annulled"; "void a plea"
Synonym(s): invalidate, annul, quash, void, avoid
Hypernym(s): cancel, strike_down
2. nullify - verb
· show to be invalid
Synonym(s): invalidate
Hypernym(s): negate, contradict
3. nullify - verb
· make ineffective by counterbalancing the effect of; "Her optimism neutralizes his gloom"; "This action will negate the effect of my efforts"
Synonym(s): neutralize, neutralise, negate
Hypernym(s): weaken
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