Invalidate

//ɪnˈvæl.əˌdeɪt// verb

verb ·Moderate ·College level

Definitions

Verb
  1. 1
    To make invalid. Especially applied to contract law.

    "The circuit court judge's ruling was invalidated by a superior judge."

  2. 2
    take away the legal force of or render ineffective wordnet
  3. 3
    To make or declare (an argument, statement, or theory) unsound or erroneous; disprove.
  4. 4
    show to be invalid wordnet
  5. 5
    To render invalid; discredit.

    "Telling an angry person to "calm down" can invalidate their feelings."

Show 2 more definitions
  1. 6
    make invalid for use wordnet
  2. 7
    declare invalid wordnet

Synonyms

All synonyms
abolishabrogateannulcanceldisannulnegate

Example

More examples

"Ziri doesn't want to invalidate his ablutions."

Etymology

First attested in 1649; borrowed from Middle French invalider, from invalide + -er. By surface analysis, in- + validate or invalid + -ate.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.