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1. Dictionary

   invalidate

   /ɪnˈvalɪdeɪt/

   verb

   • 1. make or prove (an argument, statement, or theory) unsound or erroneous. Similar disproveshow/prove to be falserefuteexplodecontradictrebutnegategainsaybeliegive the lie todiscreditexposedebunkknock the bottom out ofdrive a coach and horses throughweakenunderminecompromiseinformal:shoot full of holesshoot down (in flames)formal:confutenegativeOpposite validatesupport
   • 2. deprive (an official document or procedure) of legal validity because it contravenes a regulation or law: "a technical flaw in her papers invalidated her nomination" Similar render invalidvoidnullifyannulnegatecancelquashvetooverturnoverruleoverrideundoreverserevokerescindabolishrepealrepudiateterminateOpposite validate

   Word Origin mid 17th century: from medieval Latin invalidat- ‘annulled’, from the verb invalidare (based on Latin validus ‘strong’).

   Derivatives

   • 1. invalidation noun
   • 2. invalidator noun

   Scrabble Points: 14

   • I

     1

   • N

     1

   • V

     4

   • A

     1

   • L

     1

   • I

     1

   • D

     2

   • A

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   • T

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   • E

     1

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   More definitions, origin and scrabble points

2. dictionary.cambridge.org › dictionary › englishINVALIDATE | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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

3. www.merriam-webster.com › dictionary › invalidateInvalidate Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › invalidate

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   Learn the meaning, synonyms, and examples of the verb invalidate, which means to make invalid or weaken the effectiveness of something. See also the word history, legal and kids definitions, and translations of invalidate.

4. www.dictionary.com › browse › invalidateINVALIDATE Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › invalidate

   • Cached

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

5. www.vocabulary.com › dictionary › invalidateInvalidate - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › invalidate

   To invalidate means to cancel something or make it void, as if it never happened. In invalidate you see the word valid which means true or correct. When you invalidate something you are making it less true, less official, or less correct.

6. dictionary.cambridge.org › us › dictionaryINVALIDATE | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › us › dictionary

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

7. www.collinsdictionary.com › dictionary › englishINVALIDATE definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   Learn the meaning, pronunciation, synonyms, and usage of the verb 'invalidate' in British and American English. Find examples of 'invalidate' in sentences and related words and phrases.

8. www.oxfordlearnersdictionaries.com › english › invalidateinvalidate verb - Definition, pictures, pronunciation and usage...

   www.oxfordlearnersdictionaries.com › english › invalidate

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   Learn the meaning, pronunciation and usage of the verb invalidate, which means to prove something wrong or to make something no longer acceptable. See examples, synonyms and word origin.