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  1. INVALIDATE definition: 1. to officially stop a document, ticket, law, etc. being legally or officially acceptable 2. to…. Learn more.

    • Warranty

      WARRANTY definition: 1. a written promise from a company to...

  2. 1. to render weak or ineffective, as an argument. 2. to take away the legal force or effectiveness of; annul, as a contract.

  3. The meaning of INVALIDATE is to make invalid; especially : to weaken or destroy the cogency of. How to use invalidate in a sentence. Synonym Discussion of Invalidate.

  4. INVALIDATE meaning: 1. to officially stop a document, ticket, law, etc. being legally or officially acceptable 2. to…. Learn more.

  5. 1. To invalidate something such as an argument, conclusion, or result means to prove that it is wrong or cause it to be wrong. [...] 2. If something invalidates something such as a law, contract, or election, it causes it to be considered illegal. [...] More.

  6. invalidate - take away the legal force of or render ineffective; "invalidate a contract"

  7. Invalidate definition: to render invalid; discredit.. See examples of INVALIDATE used in a sentence.

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