Synonyms:
neutralize, neutralise, nullify, negate
Meaning: make ineffective by counterbalancing the effect of; "Her optimism neutralizes his gloom"; "This action will negate the effect of my efforts"
Synonyms:
invalidate, nullify
Meaning: show to be invalid
Synonyms:
invalidate, annul, quash, void, avoid, nullify
Meaning: declare invalid; "The contract was annulled"; "void a plea"
Usage examples
Arthur had felt a twinge of conscience during Mr. Poyser's speech, but it was too feeble to nullify the pleasure he felt in being praised.
South Carolina, oppressed by onerous duties and stung by the injustice of a refusal to allow her the ordinary remedy against unconstitutional legislation, asserted the right, as a sovereign State, to nullify the law.