INVALIDATE

invalidate, void, vitiate

(verb) take away the legal force of or render ineffective; “invalidate a contract”

invalidate, nullify

(verb) show to be invalid

cancel, invalidate

(verb) make invalid for use; “cancel cheques or tickets”

invalidate, annul, quash, void, avoid, nullify

(verb) declare invalid; “The contract was annulled”; “void a plea”

Source: WordNet® 3.1

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Etymology

Verb

invalidate (third-person singular simple present invalidates, present participle invalidating, simple past and past participle invalidated)

To make invalid. Especially applied to contract law.

Synonyms

• vitiate

Antonyms

• validate

Source: Wiktionary

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In*val"i*date, v. t. [imp. & p. p. Invalidated; p. pr. & vb. n. Invalidating.] Etym: [From Invalid null.]

Definition: To render invalid; to weaken or lessen the force of; to destroy the authority of; to render of no force or effect; to overthrow; as, to invalidate an agreement or argument.

Source: Webster’s Unabridged Dictionary 1913 Edition

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