as in volatile
likely to change frequently, suddenly, or unexpectedly
unpredictable spring weather that makes it really hard to know what to wear
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Recent Examples of unpredictable
While the number of hurricanes per season can be unpredictable, their names are anything but.
—
Mason Leath, ABC News, 5 Nov. 2025
Building can unfold faster in factories than on site, where builders face unpredictable weather.
—Addie Costello, jsonline.com, 5 Nov. 2025
For good reason, seldom is the session about unpredictable futures.
—Alexa Mikhail, Flow Space, 5 Nov. 2025
Still, its shallow and unpredictable waters have claimed many ships over the centuries.
—Aaron Randolph, Travel + Leisure, 5 Nov. 2025
See All Example Sentences for unpredictable
Mason Leath, ABC News, 5 Nov. 2025
Building can unfold faster in factories than on site, where builders face unpredictable weather.
—Addie Costello, jsonline.com, 5 Nov. 2025
For good reason, seldom is the session about unpredictable futures.
—Alexa Mikhail, Flow Space, 5 Nov. 2025
Still, its shallow and unpredictable waters have claimed many ships over the centuries.
—Aaron Randolph, Travel + Leisure, 5 Nov. 2025
See All Example Sentences for unpredictable
Recent Examples of Synonyms for unpredictable
Adjective
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First, the electrodes and electrolytes are adjusted to handle high temperatures, specifically replacing the volatile liquid electrolyte used in traditional Li batteries.—
Mrigakshi Dixit,
Interesting Engineering,
5 Nov. 2025
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Taking the long view Many finance leaders remain cautious, viewing bitcoin as too volatile—especially recently—compared to traditional assets.—
Sheryl Estrada,
Fortune,
4 Nov. 2025
Adjective
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Rigorous, blustery winter; winding sleety spring; hot, moist enervating summer; changeful autumn with its dog-days; these are absolutely unknown.—
San Diego Union-Tribune,
San Diego Union-Tribune,
1 Jan. 2023
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Hers is the kind of face that inspires directors to tight framing — gleaming, as if smoothed from marble, and yet somehow pliant, changeful.—
Jordan Kisner Jack Davison,
New York Times,
11 Oct. 2022
Adjective
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On the big screen, Harford cared for Sandra Dee’s Rosalie Stocker in The Wild and the Innocent (1959) and portrayed the opportunistic older sister of Natalie Wood’s unstable title character in Inside Daisy Clover (1965), the melodrama directed by Robert Mulligan.—
Mike Barnes,
HollywoodReporter,
9 Nov. 2025
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Despite the improvements, her health has still been unstable over the years, partially due to her diagnosis of pulmonary vein stenosis, a rare disease that narrows the veins connecting the heart and the lungs, her father told the outlet.—
Kimberlee Speakman,
PEOPLE,
7 Nov. 2025
Cite this Entry
“Unpredictable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unpredictable. Accessed 11 Nov. 2025.
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