Invalidate

[ɪn'vælɪdeɪt] or [ɪn'vælɪdet]

Definition

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

(verb.) show to be invalid.

(verb.) declare invalid; 'The contract was annulled'; 'void a plea'.

Checked by Carmen--From WordNet

Definition

(v. t.) 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.

Checked by Elisha

Synonyms and Synonymous

v. a. Nullify, annul, cancel, overthrow, make void, render of no effect.

Edited by Clare

Synonyms and Antonyms

SYN:Annul, overthrow,[See ANNUL]

Inputed by Carmela