Both 'nullify' and 'invalidate' are correct terms, but they are used in different contexts. 'Nullify' is commonly used to mean to make something legally void or ineffective, while 'invalidate' is used more broadly to mean to make something invalid or null and void.

Invalidate and nullify are synonyms that both refer to actions that make something no longer valid or effective. However, invalidate is more commonly used to describe the rejection of evidence or arguments, while nullify is more commonly used to describe the cancellation of a contract or agreement.

to render or declare legally void or inoperative: to nullify a contract. Synonyms: cancel, void, annul, invalidate to deprive (something) of value or effectiveness; make futile or of no consequence.

Nullify and invalidate are synonyms and mean to deprive of effective or continued existence. - Nullify implies counteracting completely the force, effectiveness, or value of something, to make null or void. - The contract has been nullified.

verb /ˈnʌləˌfaɪ/ (formal) Verb Forms nullify something to make something such as an agreement or order lose its legal force synonym invalidate Judges were unwilling to nullify government decisions.