Synonyms of nullify
- 1. invalidate, annul, quash, void, avoid, nullify, cancel, strike down
- usage: declare invalid; "The contract was annulled"; "void a plea"
- 2. invalidate, nullify, negate, contradict
- usage: show to be invalid
- 3. neutralize, neutralise, nullify, negate, weaken
- usage: make ineffective by counterbalancing the effect of; "Her optimism neutralizes his gloom"; "This action will negate the effect of my efforts"
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Definition and meaning of nullify (Dictionary)