English edit

Etymology edit

un- +‎ sustainable

Adjective edit

unsustainable (comparative more unsustainable, superlative most unsustainable)

  1. Not sustainable.
    • 2022 January 12, Sir Michael Holden, “Reform of the workforce or death by a thousand cuts?”, in RAIL, number 948, page 22:
      You don't have to be Einstein to work out that this level of government subsidy is unsustainable.

Translations edit