11 Trending Words of 2014


[in-val-i-deyt] /ɪnˈvæl ɪˌdeɪt/
verb (used with object), invalidated, invalidating.
to render invalid; discredit.
to deprive of legal force or efficacy; nullify.
1640-50; invalid2 + -ate1
Related forms
invalidation, noun
invalidator, noun
1. weaken, impair; disprove, refute, rebut. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
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


verb (transitive)
to render weak or ineffective, as an argument
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
Cite This Source
Word Origin and History for invalidated



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

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for invalidate

Few English speakers likely know this word

Word Value for invalidated

Scrabble Words With Friends

Quotes with invalidated

Nearby words for invalidated