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Definitions from the Web

invaildate

Part of Speech: Verb

Sense 1:

Definition: To declare something as invalid or nullify its effect.

Example Sentence: The court ruling will invalidate the previous decision made by the lower court.

Related Products (Amazon Search): Invalidation Products

Part of Speech: Adjective

Sense 1:

Definition: Not valid or legally recognized.

Example Sentence: Without a proper signature, the document will remain invalid and cannot be accepted.

Related Products (Amazon Search): Invalid Stamps

Sense 2:

Definition: Having no force or effect; null.

Example Sentence: The outdated license will render itself invalid after the expiration date.

Related Products (Amazon Search): Nullifying Stickers