invalidate
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invalidate
- /ɪnˈvæl.ɪ.deɪt/ UK
- /ɪnˈvæl.əˌdeɪt/ US
- /ɪnˈvæl.ə.dæɪt/ Australia
Where it comes from
First attested in 1649; borrowed from Middle French invalider, from invalide + -er. By surface analysis, in- + validate or invalid + -ate.
verb invalidates · invalidating · invalidated
- To make invalid (especially in to contract law) The circuit court judge's ruling was invalidated by a superior judge.
- To make or declare (an argument, statement, or theory) unsound or erroneous; disprove. The multiplicity of moral opinions is an empirical fact and does not invalidate the contention that there is only one morality par excellence.
- To render invalid; discredit. Telling an angry person to "calm down" can invalidate their feelings.