instability
noun
in·sta·bil·i·ty
ˌin(t)-stə-ˈbi-lə-tē 
: the quality or state of being unstable
especially
: lack of emotional or mental stability
Examples of instability in a Sentence
Investors are worried about the current instability of the stock market.
The patient has a history of emotional instability.
Recent Examples on the Web
This was her fourth bid for the position following years of political instability in the country.
—
Louis Casiano,
FOXNews.com,
3 July 2026
The experiments revealed which combinations of damage, flight conditions, and flight maneuvers were most likely to lead to instability.
—
Neetika Walter,
Interesting Engineering,
2 July 2026
After 1840, immigration from Western Europe began to rise quickly as political instability in Germany and the famine in Ireland drove people to leave.
—
Albert Sun,
New York Times,
2 July 2026
Many are from Colombia, Venezuela and Morocco, having fled violence or political instability, or seeking better economic opportunities.
—
Suman Naishadham,
Los Angeles Times,
2 July 2026
See All Example Sentences for instability
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Louis Casiano,
FOXNews.com,
3 July 2026
The experiments revealed which combinations of damage, flight conditions, and flight maneuvers were most likely to lead to instability.
—
Neetika Walter,
Interesting Engineering,
2 July 2026
After 1840, immigration from Western Europe began to rise quickly as political instability in Germany and the famine in Ireland drove people to leave.
—
Albert Sun,
New York Times,
2 July 2026
Many are from Colombia, Venezuela and Morocco, having fled violence or political instability, or seeking better economic opportunities.
—
Suman Naishadham,
Los Angeles Times,
2 July 2026
See All Example Sentences for instability
Cite this Entry
“Instability.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/instability. Accessed 5 Jul. 2026.
Copy CitationKids Definition
instability
noun
in·sta·bil·i·ty
ˌin(t)-stə-ˈbil-ət-ē
: the quality or state of being unstable
Medical Definition
instability
noun
in·sta·bil·i·ty
ˌin(t)-stə-ˈbil-ət-ē
plural instabilities
: the quality or state of being unstable
especially
: lack of emotional or mental stability
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