A really fast thesaurus... with lots of synonyms.
Unsustainable has 23 synonyms. The top synonyms for unsustainable are ungrounded, unsubstantiatable, vain, untenable, unverifiable, unwarranted, unprovable, groundless and 15 more. Another word for unsustainable is ungrounded. Browse the full list below.
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| Random | DefinitionA common synonym for unsustainable is ungrounded. Other synonyms include unsubstantiatable, vain, untenable, unverifiable.
Unsustainable has 23 synonyms listed on Thesaurasize.
(adj): not sustainable
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