C1
invalidate
ɪnˈvælɪdeɪt
verb
unieważniać
Also
obalać
Definition
To make something no longer valid or effective; to prove that something is wrong or false.
Examples
The court decision could invalidate the entire contract.
Decyzja sądu mogłaby unieważnić całą umowę.
New evidence may invalidate their previous findings.
Nowe dowody mogą obalić ich wcześniejsze ustalenia.
Collocations
invalidate a contractinvalidate a claiminvalidate a theory
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