Definition of sustainable
1
: capable of being sustained
2a
: of, relating to, or being a method of harvesting or using a resource so that the resource is not depleted or permanently damaged
sustainable techniques sustainable agriculture
b
: of or relating to a lifestyle involving the use of sustainable methods
sustainable society
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Merriam-Webster unabridged
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Time Traveler for sustainable
The first known use of sustainable was in 1924
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