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Definitions

unstable

[uhn-stey-buhl] / ʌnˈsteɪ bəl /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

There are 82 confirmed cases and seven confirmed deaths in the vast, unstable DRC, alongside almost 750 suspected cases and 177 suspected deaths, the WHO said on Friday.

From Barron's • May 23, 2026

Even so, researchers have struggled to fully understand how these molecules form because many of the key intermediate stages are highly unstable and disappear almost instantly.

From Science Daily • May 22, 2026

A Hypershell spokesman said that a snug, proper fit and a lower level of assistance can help on unstable terrain.

From The Wall Street Journal • May 21, 2026

But this year, climbers were hindered by a huge, unstable chunk of dangerous ice, known as a serac, which had been blocking the route from Everest Base Camp up to the peak.

From BBC • May 13, 2026

And here was the nimble Army Corps of Engineers planning to hold back 250 billion gallons of water with notoriously unstable glacial till.

From "A Walk in the Woods" by Bill Bryson




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