Английский разговорный словарь (основной) - invalidate
Invalidate
invalidate
ɪnˈvælɪdeɪt v.tr. 1 make (esp. an argument etc.) invalid. 2 removethe validity or force of (a treaty, contract, etc.). øøinvalidation n. [med.L invalidare invalidat(as IN-(1), validus VALID)]