IPA: //ʌnˈtɛnəˌbɪlɪti//
KK: /ʌnˈtɛnəˌbɪlɪti/
The state or condition of being unable to be maintained or defended, often used in discussions about arguments or positions that cannot be justified.
The untenability of his argument became clear during the debate.
Untenability → It is formed from "un-" (meaning not), "tenere" (meaning to hold), and "-ability" (meaning the quality of being able to). The word describes the quality of not being able to be held or maintained.
Think of 'not holding' ('un-' means not, and 'tenere' means to hold) to remember that 'untenability' refers to something that cannot be maintained.