invalidate

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

• (UK) IPA^(key): /ɪnˈvæl.ɪ.deɪt/
• (US) IPA^(key): /ɪnˈvæl.əˌdeɪt/

  • Audio (US):

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• (General Australian) IPA^(key): /ɪnˈvæl.ə.dæɪt/

invalidate (third-person singular simple present invalidates, present participle invalidating, simple past and past participle invalidated)

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.

• disprove
• vitiate
• negate

• validate

invalidate

1. inflection of invalidare:
   1. second-person plural present indicative
   2. second-person plural imperative

invalidate f pl

1. feminine plural of invalidato

invalidate

1. second-person singular voseo imperative of invalidar combined with te