inoperative
adjective/ɪnˈɒpərətɪv/
/ɪnˈɑːpərətɪv/
(formal)- (of a rule, system, etc.) that cannot be used because it is not legally or officially acceptable
- Your insurance policy will become inoperative if your circumstances change.
- (of a machine) not working; not functioning correctly opposite operative
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inoperative