Invalidate



[in-val-i-deyt] /ɪnˈvæl ɪˌdeɪt/

verb (used with object), invalidated, invalidating.
1.
to render ; discredit.
2.
to deprive of legal force or efficacy; nullify.
/ɪnˈvælɪˌdeɪt/
verb (transitive)
1.
to render weak or ineffective, as an argument
2.
to take away the legal force or effectiveness of; annul, as a contract
v.

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

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  • Invalidation

    [in-val-i-deyt] /ɪnˈvæl ɪˌdeɪt/ verb (used with object), invalidated, invalidating. 1. to render ; discredit. 2. to deprive of legal force or efficacy; nullify. /ɪnˈvælɪˌdeɪt/ verb (transitive) 1. to render weak or ineffective, as an argument 2. to take away the legal force or effectiveness of; annul, as a contract n. 1771, noun of action from […]

  • Invalidism

    [in-vuh-li-diz-uh m] /ˈɪn və lɪˌdɪz əm/ noun 1. prolonged ill health. /ˈɪnvəlɪˌdɪzəm/ noun 1. the state of being an invalid, esp by reason of ill health 2. a state of being abnormally preoccupied with one’s physical health



  • Invalidity

    [in-vuh-lid-i-tee] /ˌɪn vəˈlɪd ɪ ti/ noun 1. lack of validity. [in-vuh-lid-i-tee] /ˌɪn vəˈlɪd ɪ ti/ noun 1. . n. 1540s, from Latin invalidatus (see invalid (adj.)).

  • Invalidity benefit

    noun 1. (formerly, in the British National Insurance scheme) a weekly payment to a person who had been off work through illness for more than six months: replaced by incapacity benefit in 1995 IVB



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