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Synonyms

invalidity

1 American  
[in-vuh-lid-i-tee] / ˌɪn vəˈlɪd ɪ ti /

noun

  1. lack of validity.


invalidity 2 American  
[in-vuh-lid-i-tee] / ˌɪn vəˈlɪd ɪ ti /

noun

  1. invalidism.


Etymology

Origin of invalidity1

From the Medieval Latin word invaliditās, dating back to 1540–50. See invalid 2, -ity

Origin of invalidity2

First recorded in 1905–10; invalid 1 + -ity

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The court has suspended its declaration of invalidity for three years, giving parliament time to amend the current laws to align with its judgement.

From BBC • Oct. 3, 2025

Young voters typically vote in primaries in vanishingly small numbers, comparable only to the size of the post-80 crowd, whose statistics are decimated by invalidity and death.

From Salon • Jun. 30, 2025

“It’s not just that they haven’t made a compelling case for constitutional invalidity in this application, they’ve made absolutely no case for it,” Begbie said.

From Washington Times • Jun. 25, 2023

If the government presses ahead to pay compensation on behalf of the companies, the lawyers would fight to prove its invalidity, he said.

From Reuters • Feb. 16, 2023

From a doubt of the baptism of the duchess, they wished to infer the invalidity of her marriage with Charles, which was then the grand business of Charles IV.

From The Phantom World or, The philosophy of spirits, apparitions, &c, &c. by Christmas, Henry