Usually means: Make invalid; render null, void.
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We found 29 dictionaries that define the word Invalidate:

General (24 matching dictionaries)
  1. invalidate: Merriam-Webster
  2. invalidate: Oxford Learner's Dictionaries
  3. invalidate: American Heritage Dictionary of the English Language
  4. invalidate: Collins English Dictionary
  5. invalidate: Vocabulary.com
  6. Invalidate, invalidate: Wordnik
  7. invalidate: Cambridge Advanced Learner's Dictionary
  8. invalidate: Wiktionary
  9. invalidate: Webster's New World College Dictionary, 4th Ed.
  10. invalidate: The Wordsmyth English Dictionary-Thesaurus
  11. invalidate: Infoplease Dictionary
  12. invalidate: Dictionary.com
  13. invalidate: Cambridge Essential American English Dictionary
  14. Invalidate: Online Plain Text English Dictionary
  15. invalidate: Webster's Revised Unabridged, 1913 Edition
  16. invalidate: Rhymezone
  17. Invalidate: AllWords.com Multi-Lingual Dictionary
  18. invalidate: Webster's 1828 Dictionary
  19. invalidate: FreeDictionary.org
  20. invalidate: Mnemonic Dictionary
  21. invalidate: TheFreeDictionary.com
  22. invalidate: Longman Dictionary of Contemporary English

Business (3 matching dictionaries)
  1. invalidate: Merriam-Webster Legal Dictionary
  2. Glossary of Legal Terms (No longer online)
  3. invalidate: Legal dictionary

Computing (1 matching dictionary)
  1. invalidate: Encyclopedia

Medicine (1 matching dictionary)
  1. online medical dictionary (No longer online)

(Note: See invalidated as well.)

Google, News, Images, Wikipedia, Reddit, Scrabble
Definitions from Wiktionary (invalidate)

▸ verb:  To make invalid. Especially applied to contract law.
▸ verb:  To make or declare (an argument, statement, or theory) unsound or erroneous; disprove.
▸ verb:  To render invalid; discredit.

Similar:
nullify, annul, vitiate, avoid, cancel, void, quash, invalid, irritate, set aside, more...

Opposite:
validate, verify, authenticate

Types:
nullify, negate, counteract, vitiate, void, more...

Phrases:
invalidate an argument, invalidate or cancel, more...

Adjectives:
least, write, and, wise, hedonistic, void, identical, twin

Colors:
    gray,     black,     white,     beige,     charcoal, more...



▸ Words similar to Invalidate

▸ Usage examples for Invalidate

▸ Idioms related to Invalidate

▸ Wikipedia articles (New!)

▸ Words that often appear near Invalidate

▸ Rhymes of Invalidate

▸ Invented words related to Invalidate

Similar:
nullify, annul, vitiate, avoid, cancel, void, quash, invalid, irritate, set aside, more...

Opposite:
validate, verify, authenticate

Types:
nullify, negate, counteract, vitiate, void, more...

Phrases:
invalidate an argument, invalidate or cancel, more...

Adjectives:
least, write, and, wise, hedonistic, void, identical, twin

Colors:
    gray,     black,     white,     beige,     charcoal, more...



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