unsustainable

[ uhn-suh-stey-nuh-buhl ]

adjective

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

Other Words From

• unsus·taina·bly adverb

Word History and Origins

Origin of unsustainable¹

1670–80; un- ¹ + sustainable ( def )

Example Sentences

The bet proved unsustainable, and four years later, OpenAI signed an investment deal with Microsoft.

From MIT Technology Review

As the global population grows, this strategy is becoming increasingly unsustainable.

From Singularity Hub 

I’ve tried several night moisturizers this year, and I always come back to this one from Tatcha, even though the price tag makes it a bit unsustainable.

From Fortune

SaaS solutions are replacing unsustainable manual processes.

From TechCrunch

“That may create some good outcomes but it is an unsustainable way to ensure a distinction between for-profit and non-profit hospitals,” Grassley wrote.

From ProPublica

The police state system that propped up dictators from Algiers to Islamabad for decades was unsustainable.

From The Daily Beast

Having a democratic state for Jews and a nondemocratic occupied state for Palestinians is unsustainable.

From The Daily Beast

Moreover, the growth fueled by the MWP proved to be unsustainable.

From The Daily Beast

Its most far-reaching elements have proved unconstitutional, unworkable, or politically unsustainable.

From The Daily Beast

Sure, Tesla investors have pushed the stock up to levels that are insanely high and perhaps unsustainable.

From The Daily Beast

The use, therefore, which was made of the resolutions on Mr. Duffy's trial was false and unsustainable in every point of view.

From Project Gutenberg

But she was crying dreadfully; and he was proving to her some new and unsustainable theory of bacilli.

From Project Gutenberg

But our soul's arches underfit into its; and so, prevent the upper arch from falling on us with unsustainable inscrutableness.

From Project Gutenberg

If this is unsustainable, there is nothing finally in his Metaphysics of Will to necessitate the pessimistic conclusion drawn.

From Project Gutenberg

The classic interpretation appears still more unsustainable when we know what the primitive mourning consists in.

From Project Gutenberg

Related Words

• unsuitable
• untenable