unsustainable

[uhn-suh-stey-nuh-buh l]

adjective

not sustainable; not to be supported, maintained, upheld, or corroborated.

Nearby words

  1. unsurpassed,
  2. unsurprised,
  3. unsurprising,
  4. unsuspected,
  5. unsuspecting,
  6. unswathe,
  7. unswear,
  8. unsweetened,
  9. unswerving,
  10. unsympathetic

Origin of unsustainable

1670–80; un-1 + sustainable

Related formsun·sus·tain·a·bly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unsustainable


Word Origin and History for unsustainable

unsustainable

adj.

1670s, from un- (1) "not" + sustainable.

Online Etymology Dictionary, © 2010 Douglas Harper