1) Dead 2) Defunct 3) Down 4) No longer in effect 5) Not in operation 6) Not operating 7) Not operative 8) Not running 9) Not working or taking effect 10) The beginning of a spy 11) Void Found on https://www.crosswordclues.com/clue/inoperative
In·op'er·a·tive adjective [ Prefix in- not + operative .] Not operative; not active; producing no effects; as, laws renderd inoperative by neglect; inoperative remedies or processes. Found on http://www.encyclo.co.uk/webster/I/64
not operative; not in operation. · without effect: inoperative remedies. · no longer in effect; void; canceled: The earlier rule is now inoperative. Found on https://www.infoplease.com/dictionary/inoperative