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untenable▼(Not able to be held, as of an opinion or position)adjective[UK: ʌn.ˈte.nəb.l̩] [US: ʌn.ˈte.nəb.l̩]
unsustainability▼(state or condition of being unsustainable)noun[UK: ˌʌnsəsˌteɪnəˈbɪlɪti ] [US: ˌʌnsəˌsteɪnəˈbɪlɪti ]
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