Italian › DictionaryinsostenibileC2#17,094Hear itadjectivefemininemasculineunsustainableintolerable, unbearable, unendurableuntenable, indefensibleFormsadjectivesingularinsostenibilepluralinsostenibiliOther ways to say itindifendibileindefensibleinsopportabileunbearable, intolerable, insufferable, unendurable; unaffordableintollerabileintolerable, inadmissible; unbearable, unendurable, insufferableRead Italian with every word explained