untenable
un‧ten‧a‧ble /ʌnˈtenəbəl/
adjective formal
1. an untenable situation has become so difficult that it is impossible to continue:
The scandal put the President in an untenable position.
2. an untenable argument, suggestion etc is impossible to defend
un‧ten‧a‧ble /ʌnˈtenəbəl/
adjective formal1. an untenable situation has become so difficult that it is impossible to continue:
2. an untenable argument, suggestion etc is impossible to defend