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invalidate

[in-val-i-deyt] /ɪnˈvæl ɪˌdeɪt/
verb (used with object), invalidated, invalidating.
1.
to render invalid; discredit.
2.
to deprive of legal force or efficacy; nullify.
Origin
1640-1650
1640-50; invalid2 + -ate1
Related forms
invalidation, noun
invalidator, noun
Synonyms
1. weaken, impair; disprove, refute, rebut.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for invalidated
  • If the results are contradictory to your belief system then it doesn't mean that your belief system is invalidated.
  • But nothing has ever invalidated his general theory of natural selection.
  • The point the said philosopher makes is that the scientific idea should not be invalidated because of its source of inspiration.
  • Their theories get disproved, or research is invalidated.
  • They publish their results and it either gets validated or invalidated as knowledge increases.
  • The vast majority of valid discoveries that science makes are never invalidated.
  • My pets must be vaccinated every year otherwise their insurance is invalidated.
  • And your point is not invalidated by the errors in the above statement.
  • Better yet, our base intuitions about what is important and meaningful emerge reconfigured but strengthened, not invalidated.
  • Some federal courts of appeals quickly ruled that the decision effectively invalidated them.
British Dictionary definitions for invalidated

invalidate

/ɪnˈvælɪˌdeɪt/
verb (transitive)
1.
to render weak or ineffective, as an argument
2.
to take away the legal force or effectiveness of; annul, as a contract
Derived Forms
invalidation, noun
invalidator, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for invalidated

invalidate

v.

1640s, from invalid + -ate (2). Related: Invalidated; invalidating.

Online Etymology Dictionary, © 2010 Douglas Harper
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