nullify

/ˈnʌlɪfaɪ/ verb [T] formal

Definition

LOSE EFFECT › to make something lose its effect: Advances in medicine have nullified the disease's effect.

LEGAL › to say officially that something has no legal power: The judge could nullify the entire trial.

(Definition of nullify verb from the Cambridge Learner's Dictionary © Cambridge University Press)

real or true

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