46 synonyms for sustainable such as conservational, balanced-growth, and balanced. Sustainable is an adjective, and its antonyms are unsustainable and exhaustible.
Balanced, Balanced-growth, Conservational, Consistent, Continuous, Cost-effective, Durable, Earth-friendly, Eco-friendly, Endurable, Enduring, Energy-efficient, Environmental, Environmentally sound, Equitable, Forward-thinking, Green, Harm-reducing, Lasting, Life-supporting, Liveable, Long-lasting, Long-term, Low-impact, Maintainable, Non-depleting, Non-exhaustive, Perpetual, Persistent, Planet-friendly, Regenerative, Reliable, Renewable, Resilient, Resource-efficient, Responsible, Restorative, Reusable, Self-reliant, Self-sustaining, Stable, Steady, Supportable, Uninterrupted, and Viable.