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[in-val-i-deyt] /ɪnˈvæl ɪˌdeɪt/

verb (used with object), invalidated, invalidating.
to render ; discredit.
to deprive of legal force or efficacy; nullify.
verb (transitive)
to render weak or ineffective, as an argument
to take away the legal force or effectiveness of; annul, as a contract

1771, noun of action from invalidate (v.).

1640s, from invalid + -ate (2). Related: Invalidated; invalidating.


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