Pronunciation: /səˈsteɪnəb(ə)l/
adjective
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1able to be maintained at a certain rate or level: sustainable economic growth
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conserving an ecological balance by avoiding depletion of natural resources: our fundamental commitment to sustainable development
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2able to be upheld or defended: sustainable definitions of good educational practice

Derivatives
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Pronunciation: /-ˈbɪlɪti/
noun -
adverb