unenforceable

un en force a ble |ˌənenˈfôrsəbəl ˌənɛnˈfɔrsəbəl | ▶adjective (esp. of an obligation or law ) impossible to enforce.

unenforceable

un |en ¦force |able |ʌnɪnˈfɔːsəb (ə )l, -ɛn- | ▶adjective (especially of an obligation or law ) impossible to enforce.