Skip to content

invalidate

verb

  1. cause to be/show to be invalid
L227706 on Wikidata ↗

Wiktionary

Pronunciation: /ɪnˈvæl.ɪ.deɪt/ / /ɪnˈvæl.əˌdeɪt/ / /ɪnˈvæl.ə.dæɪt/

verb

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

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

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

  2. To make or declare (an argument, statement, or theory) unsound or erroneous; disprove.
  3. To render invalid; discredit.

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