invalidate

== English == === Etymology === First attested in 1649; borrowed from Middle French invalider, from invalide +‎ -er. By surface analysis, in- +‎ validate or invalid +‎ -ate. === Pronunciation === (UK) IPA(key): /ɪnˈvæl.ɪ.deɪt/ (US) IPA(key): /ɪnˈvæl.əˌdeɪt/ (General Australian) IPA(key): /ɪnˈvæl.ə.dæɪt/ === Verb === invalidate (third-person singular simple present invalidates, present participle invalidating, simple past and past participle invalidated) To make invalid. Especially applied to contract law. Synonym: extinguish To make or declare (an argument, statement, or theory) unsound or erroneous; disprove. To render invalid; discredit. ==== Synonyms ==== disprove vitiate negate ==== Antonyms ==== validate ==== Derived terms ==== ==== Translations ==== == Italian == === Etymology 1 === ==== Verb ==== invalidate inflection of invalidare: second-person plural present indicative second-person plural imperative === Etymology 2 === ==== Participle ==== invalidate f pl feminine plural of invalidato == Spanish == === Verb === invalidate second-person singular voseo imperative of invalidar combined with te