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.

   Synonym: extinguish

   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