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    invalidity

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    invalidity
    in‧va‧lid‧it‧y AC /ˌɪnvəˈlɪdəti, ˌɪnvəˈlɪdɪti/ noun [uncountable] formal
     Word Family: verb: validate ≠ invalidate; noun: validity ≠ invalidity; adjective: valid ≠ invalid
    1. the state of being too ill, old, or injured to work:
        invalidity benefit
    2. the state of being not legally or officially acceptable