Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To make invalid; nullify.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To make invalid. Esp. applied to contract law.

from the GNU version of the Collaborative International Dictionary of English

  • transitive v. To render invalid; to weaken or lessen the force of; to destroy the authority of; to render of no force or effect; to overthrow.

from The Century Dictionary and Cyclopedia

  • To render invalid; destroy the strength or validity of; render of no force or effect.
  • Specifically In law, to deprive of binding force or legal efficacy: as, fraud invalidates a contract.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. show to be invalid
  • v. take away the legal force of or render ineffective
  • v. declare invalid
  • v. make invalid for use

Etymologies

From in- +‎ Latin valere ("to be strong"); literally, “to make not strong”. (Wiktionary)

Examples

  • FARRELL: I'm afraid I have to say that I think if the west started getting into the game of asking Muslim clerics to issue fatwas then it would put the clerics in a very difficult situation and it would kind of invalidate the fatwa if they did it because they would look like they're doing it at the behest of the west.

    CNN Transcript Jan 20, 2006

  • Flash forward to the present, where Weaver and Quaintance last week filed a request in Superior Court to "invalidate" local governments 'approval of the hotel for federal stimulus funding.

    Record Article Feed

  • But at the same time it would kind of invalidate the whole series 'intent - choosing to demure about the hard, bloody climax doesn't pay proper respect to the costly sacrifices of sexual responsibilism that the books so ennoble.

    Gawker

  • So Physicist Husband is helping to work out the airflow issues, perhaps by installing a small fan or upgrading to a better colander, which would kind of invalidate the point of using stuff we already had around the house.

    MAKE Magazine

  • Now it would sure be nice to know when something changes, so if California does sink, Iraq or Canada become the 51 st state, you don't have to watch CNN and ask all your clients to either wait for the cache to update, or "invalidate" the cache.

    MSDN Blogs

  • The conservative judges have had no hesitation in striking down desegregation plans adopted by popularly elected school boards, reversing decisions creating a wall separating church and state, changing constitutional rules that have been followed for decades controlling the exclusion of illegally obtained evidence, using the Second Amendment to invalidate democratically created gun control laws, and overturning seventy years of precedent to make it harder for injured plaintiffs to get into federal court.

    The Conservative Assault on the Constitution

  • Over the course of our week in Minsk, increasingly we focused on one thing: the importance of their creating an independent judiciary with the authority to invalidate actions, especially by the executive, that violated their constitution.

    The Conservative Assault on the Constitution

  • The claim of 41-91% (hospitalization reduction) would invalidate that.

    Archive 2010-01-01

  • So they said basically, look we are not going to invalidate it just because the journal was not in sufficient detail. now then in dictum they say the question was non-justiciable, but you could always say that is just dictum.

    The Volokh Conspiracy » Would “Deem & Pass” Survive Judicial Review?

  • I questioned the premise of this post, which is that a State can manufacture standing by passing a statute which purports to invalidate a federal law.

    The Volokh Conspiracy » Standing and Ripeness in State Lawsuits:

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