unsustainable ·adjective
Phonetics: /ˌʌn.səˈsteɪ.nə.bl ̩/ Level: C2
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unsustainable ·adjective (HARMFUL TO THE ENVIRONMENT)
Definition: causing damage to the environment by using more of something than can be replaced naturally Level: C2
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unsustainable ·adjective (NOT ABLE TO CONTINUE)
Definition: Something that is unsustainable cannot continue at the same rate. Level: C2