in ‧ op ‧ e ‧ ra ‧ ble /ɪnˈɒp ə rəb ə l $ ɪnˈɑː-/ BrE AmE adjective
1 . an inoperable illness or medical condition cannot be treated by an operation:
an inoperable brain tumour
2 . something that is inoperable cannot be used:
The bombing rendered the airfield inoperable.