unsustainableadjective
uk/ˌʌn.səˈsteɪ.nə.bəl/us/ˌʌn.səˈsteɪ.nə.bəl/C2 Something that is unsustainable cannot continue at the same rate:
This level of spending is unsustainable.
C2 causing damage to the environment by using more of something than can be replaced naturally:
unsustainable fishing methods
Thesaurus: synonyms and related words
Unachievable
- be (a) no go idiom
- be on a hiding to nothing idiom
- be out of your league idiom
- cat
- elusive
- impossible
- impracticable
- in/out of the running idiom
- infeasible
- inoperable
- league
- love
- no way idiom
- nohow
- running
- unfeasible
- unworkable
- way
- will-o'-the-wisp
- you can't make a silk purse out of a sow's ear idiom
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You can also find related words, phrases, and synonyms in the topics:
Environmental issues