invalidate

US /ɪnˈvæl.ə.deɪt/
UK /ɪnˈvæl.ə.deɪt/
"invalidate" picture
1.

make (an argument, statement, or theory) unsound or invalid

:
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New evidence could invalidate the previous findings.
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His alibi was strong, but the new witness's testimony might invalidate it.
:
nullifynegatedisproverefutedebunkundermineweakencancelvoidannul
2.

deprive (a person) of legal effectiveness because of a disability or illness

:
•
A severe injury could invalidate him from continuing his career.
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The court ruled that his mental state did not invalidate his will.
:
incapacitatedisablecripplehandicapdisqualify
:
invalidinvalidation