invalidate

[ in-val-i-deyt ]

verb (used with object)

, in·val·i·dat·ed, in·val·i·dat·ing.

1. to render invalid; discredit.

   Synonyms: rebut, refute, disprove, impair, weaken

2. to deprive of legal force or efficacy; nullify.

invalidate

/ ɪnˈvælɪˌdeɪt /

verb

1. to render weak or ineffective, as an argument
2. to take away the legal force or effectiveness of; annul, as a contract

Derived Forms

• inˌvaliˈdation, noun
• inˈvaliˌdator, noun

Other Words From

• in·vali·dation noun
• in·vali·dator noun

Word History and Origins

Origin of invalidate¹

First recorded in 1640–50; invalid ² + -ate ¹

Example Sentences

The 9th Circuit Court of Appeals in August rejected similar claims from the organization as it sought to invalidate the 2020 California election.

From Los Angeles Times

It said that all invalidated tickets will be made available again through the official seller, Ticketmaster, at face value.

From BBC

Legal experts told the paper that the move invalidated his right to work in the country.

From Salon

Rosenbeg said Friday it objected on several grounds including Carter’s insistence that the invalidated 10-year lease be replaced by a one-year lease.

From Los Angeles Times

Read it to see how white-dominated high school curricula can erase and invalidate Black students.

From Los Angeles Times

Related Words

• abolish
• abrogate
• annul
• discredit
• disqualify
• impair
• negate
• nullify
• overrule
• quash
• revoke
• undermine
• undo