The word "unsustainable" in English means: Not able to continue at the same rate or level., Causing damage to the environment by using resources too quickly..
The phonetic transcription of "unsustainable" is /ˌʌnsəˈsteɪnəbl/ in British English and /ˌʌnsəˈsteɪnəbl/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "unsustainable": untenable, flawed, inconsistent, unjustifiable.
Example usage of "unsustainable": "This way of life is unsustainable.". More examples on the page.