inoperative
[adjective]
Synonyms: out of action, broken, defective, ineffective, invalid, null and void, out of order, out of service, useless

[TahlilGaran] English Synonym Dictionary ▲

in‧op‧e‧ra‧tive /ɪnˈɒpərətɪv $ ɪnˈɑː-/ adjective formal

1. a machine that is inoperative is not working, or is not in working condition

2. a system or a law that is inoperative does not work anymore or cannot be made to work

[TahlilGaran] Dictionary of Contemporary English ▲