Word.ws English Dictionary

unsustainable

unsustainable adjective: not sustainable.

Adjective

unsustainable (comparative more unsustainable, superlative most unsustainable)

  1. Not sustainable.
    • You don't have to be Einstein to work out that this level of government subsidy is unsustainable.2022 January 12, Sir Michael Holden, “Reform of the workforce or death by a thousand cuts?”, in RAIL, number 948, page 22
    • RTDs cover a multitude of sips, including: “hard” or “spiked” teas, coffees, kombuchas and seltzers; […]. And although the sector was birthed in the ’30s by drinks like Campari Soda, and boomed in the ’90s with Bacardi Breezer and Smirnoff Ice, RTDs are now at a point of seemingly unsustainable...2022 July 4, Ben Schott, “Is There Anything That Gen Z Won’t Drink?”, in The Washington Post

Noun

unsustainable (plural unsustainables)

  1. Something that cannot be sustained.

unsustainable meaning in Tamil

unsustainable in Tamil

தாங்க முடியாத, நிறுவமுடியாத

Forms of unsustainable

Adjective
comparativemore unsustainable
superlativemost unsustainable
Noun
pluralunsustainables

Origin of unsustainable

From un- + sustainable.

Words formed from unsustainable

Questions about unsustainable

What does unsustainable mean?
Unsustainable means not sustainable.
What is unsustainable in Tamil?
Unsustainable in Tamil is தாங்க முடியாத, நிறுவமுடியாத. See Unsustainable meaning in Tamil.
What part of speech is unsustainable?
Unsustainable can be an adjective or a noun.

Words near unsustainable in the dictionary

  1. unsuspicious
  2. unsuspiciously
  3. unsuspiciousness
  4. unsustainabilities
  5. unsustainability
  6. unsustainable
  7. unsustainables
  8. unsustainably
  9. unsustained
  10. unsustaining
  11. unsuturable

Source and license

Adapted from Wiktionary: unsustainable (page history and authors); unsustainable (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-unsustainable.wav.

Cite this entry: “unsustainable.” Word.ws, https://word.ws/unsustainable. Based on Wiktionary, CC BY-SA 4.0.