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invalidate

[ in-val-i-deyt ]

/ ɪnˈvæl ɪˌdeɪt /

SEE SYNONYMS FOR invalidate ON THESAURUS.COM

verb (used with object), in·val·i·dat·ed, in·val·i·dat·ing.

to render invalid; discredit.

to deprive of legal force or efficacy; nullify.

Origin of invalidate

First recorded in 1640–50; invalid² + -ate¹

SYNONYMS FOR invalidate

1 weaken, impair; disprove, refute, rebut.

SEE SYNONYMS FOR invalidate ON THESAURUS.COM

OTHER WORDS FROM invalidate

in·val·i·da·tion, noun in·val·i·da·tor, noun

Words nearby invalidate

invade, invaginable, invaginate, invagination, invalid, invalidate, invalidism, invalidity, invalidity benefit, invaluable, invar

Example sentences from the Web for invalidate

However, in an encouraging sign for clinics—and common sense—the narrow ruling does not invalidate buffer zones in general.

The Supreme Court Lets Abortion Clinics Protect Themselves |Sally Kohn |June 26, 2014 |DAILY BEAST
While the Court did not invalidate Section 5, it did rule Section 4(b) unconstitutional.

Eric Cantor’s Last, Legacy-Burnishing Task: Update the VRA |Ron Christie |June 16, 2014 |DAILY BEAST
The gun lobby is currently funding lawsuits all over America, trying to invalidate local, state, and federal gun restrictions.

Hands Off Those Gun Laws, Judges |Eric Segall |June 1, 2014 |DAILY BEAST
Is the Supreme Court going to invalidate campaign finance laws further in the aftermath of its 2010 decision in Citizens United?

McCutcheon v. FEC: Big Money Fights Back at the Supreme Court |Ben Jacobs |October 9, 2013 |DAILY BEAST

A consortium of scientists and the American Civil Liberties Union eventually sued to invalidate the patents a few years ago.

The Supremes Get It Right, Naturally. |Sam Kean |June 14, 2013 |DAILY BEAST
This does not invalidate the evidence of their divine origin.

A Practical Directory for Young Christian Females |Harvey Newcomb
Mr. Gell then proceeds to invalidate the authority of previous writers on the subject of Ithaca.

Life of Lord Byron, Vol. 6 (of 6) |Thomas Moore
The fact that the uprising had failed did not seem in the least to invalidate the vision.

New York Times Current History; The European War, Vol 2, No. 2, May, 1915 |Various
Her acceptance of the terms of annexation proposed by the United States does not discharge or invalidate the claim.

A Compilation of the Messages and Papers of the Presidents: Polk |Compiled by James D. Richardson
It is a sound maxim in law, that the superfluous does not invalidate the essential.

The Missing Link in Modern Spiritualism |A. Leah Underhill

British Dictionary definitions for invalidate

invalidate

/ (ɪnˈvælɪˌdeɪt) /

verb (tr)

to render weak or ineffective, as an argument

to take away the legal force or effectiveness of; annul, as a contract

Derived forms of invalidate

invalidation, noun invalidator, noun