sustainable
//səˈsteɪnəbəl//
Adjective
more sustainableComparative
most sustainableSuperlative
1
Able to be maintained at a certain rate or level without depleting natural resources or causing ecological damage.
We need to develop sustainable energy sources to protect the environment.
2
Able to be upheld or defended; capable of being continued over a period of time.
The current economic growth rate is not sustainable in the long term.