unsustainable

C1
US /ˌənsəˈsteɪnəbəl/
adj noun Freq #45318

Meanings

  1. 1
    adj

    Not sustainable.

    You don't have to be Einstein to work out that this level of government subsidy is unsustainable.

  2. 2
    noun

    Something that cannot be sustained.

Etymology

From un- + sustainable.

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