unclassifiable
un clas si fi a ble |ˌənˈklasəˌfīəbəl ˌənˈklæsəˌfaɪəbəl | ▶adjective not able to be assigned to a particular class or category.
un |clas ¦si |fi ¦able |ʌnˈklasɪfʌɪəb (ə )l | ▶adjective not able to be assigned to a particular class or category.