- to render invalid; discredit.
- to deprive of legal force or efficacy; nullify.
Origin of invalidate
SynonymsSee more synonyms on Thesaurus.com
1. weaken, impair; disprove, refute, rebut.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for invalidation
In his concurring opinion, Clarence Thomas called for the invalidation of any limits on campaign donations.The Supreme Court Rules Campaign Limits Are for Losers
April 2, 2014
No invalidation of this statement is drawn from the Greek language.A Handbook of the English Language
Robert Gordon Latham
I should have heard of your being proposed for invalidation.Trooper 3809
The South could not in 1861 justify her right to revolution, for there was no oppression nor invalidation of rights.The Battle of Principles
Newell Dwight Hillis
“Phrase of arms,” a series of attacks and parries ending in a hit or invalidation.
- to render weak or ineffective, as an argument
- to take away the legal force or effectiveness of; annul, as a contract
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
Word Origin and History for invalidation
1771, noun of action from invalidate (v.).
Online Etymology Dictionary, © 2010 Douglas Harper