unsustainable
//ˌʌn.səˈsteɪ.nə.bəl//
Adjective
unsustainableCanonical form
1
Not able to be maintained or continued at the current rate or level.
The current rate of energy consumption is unsustainable.
2
Causing damage to the environment by using more resources than can be replaced naturally.
Our unsustainable use of fossil fuels is harming the planet.
3
(Of an argument or theory) not able to be defended or supported.
The lawyer argued that the defendant's claim was unsustainable due to lack of evidence.