138 Synonyms & Antonyms of SUSTAINABLE - Merriam-Webster
https://www.merriam-webster.com/thesaurus/sustainable
WebSynonyms for SUSTAINABLE: justifiable, viable, acceptable, legitimate, maintainable, supportable, defendable, rational; Antonyms of SUSTAINABLE: untenable, unjustifiable, irrational, ridiculous, unsustainable, absurd, extreme, unreasonable
DA: 11 PA: 37 MOZ Rank: 82