| sustainable(adjective, characteristic, stability, persistence) |
| feasible(adjective, support, characteristic, quality, stability) |
| tenable(adjective, support, characteristic, quality, stability) |
| justifiable(adjective, support, characteristic, quality, maintenance) |
| long-term(adjective, characteristic, stability, persistence) |
| maintainable(adjective, support, characteristic, quality, maintenance) |
| suitable(adjective, characteristic, stability, persistence) |
| viable(adjective, support, characteristic, quality, maintenance) |
| defensible(adjective, support, characteristic, quality, maintenance) |
| supportable(adjective, support, quality, maintenance) |
| bearable(adjective, support, quality, maintenance) |
| continual(adjective, support, quality, maintenance) |
| continuous(adjective, support, quality, maintenance) |
| green(adjective, support, quality, maintenance) |
| imperishable(adjective, support, quality, maintenance) |
| livable(adjective, support, quality, maintenance) |
| renewable(adjective, support, quality, maintenance) |
| unceasing(adjective, support, quality, maintenance) |
| unending(adjective, support, quality, maintenance) |
| workable(adjective, support, quality, maintenance) |