volatile
Americanadjective
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evaporating rapidly; passing off readily in the form of vapor.
Acetone is a volatile solvent.
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tending or threatening to break out into open violence; explosive.
a volatile political situation.
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changeable; mercurial; flighty.
a volatile disposition.
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(of prices, values, etc.) tending to fluctuate sharply and regularly.
volatile market conditions.
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fleeting; transient.
volatile beauty.
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Computers. of or relating to storage that does not retain data when electrical power is turned off or fails.
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able to fly or flying.
noun
adjective
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(of a substance) capable of readily changing from a solid or liquid form to a vapour; having a high vapour pressure and a low boiling point
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(of persons) disposed to caprice or inconstancy; fickle; mercurial
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(of circumstances) liable to sudden, unpredictable, or explosive change
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lasting only a short time
volatile business interests
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computing (of a memory) not retaining stored information when the power supply is cut off
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obsolete flying or capable of flight; volant
noun
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a volatile substance
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rare a winged creature
Other Word Forms
Etymology
Origin of volatile
First recorded in 1250–1300; Middle English, from Latin volātilis, equivalent to volāt(us) “flown,” past participle of volāre “to fly” + -ilis -ile
Explanation
Watch out when a situation becomes volatile — it is likely to change for the worse suddenly. If you and your best friend have a volatile relationship, you frequently fight and make up. Volatile from Latin volatilis, "fleeting, transitory," always gives the sense of sudden, radical change. Think of it as the opposite of stable. A person who is volatile loses his or her temper suddenly and violently. A volatile political situation could erupt into civil war. When the stock market is volatile, it fluctuates greatly. And in scientific language, a volatile oil evaporates quickly.
Vocabulary lists containing volatile
Words from "The Avengers"
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A Thousand Splendid Suns
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This Week in Words: November 11 - 17, 2017
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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.
But utility costs have become volatile, and the previous owners’ bill could be much lower than what a new owner will pay.
From MarketWatch ● Aug. 15, 2026
While jet fuel trading conditions should improve from the 1H trough, he expects trading margins to remain pressured due to volatile energy prices.
From The Wall Street Journal ● Aug. 14, 2026
Our reporting examines how two of the world’s most powerful figures quietly mended one of modern politics’ most volatile partnerships—and what both stand to gain ahead of the high-stakes midterm elections.
From The Wall Street Journal ● Aug. 14, 2026
Nowhere is that instability more pronounced than in South Korea's tech-heavy Kospi, widely regarded as the world's most volatile stock index.
From BBC ● Aug. 13, 2026
He had discovered that grief did not dim with time; it was instead a volatile state of being.
From "Americanah" by Chimamanda Ngozi Adichie
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
