UNPREDICTABLE Synonyms: 75 Similar and Opposite Words

unpredictable

adjective

ˌən-pri-ˈdik-tə-bəl

Definition of unpredictable

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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Example Sentences

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Recent Examples of unpredictable But persistent geopolitical uncertainty and volatility make that process more unpredictable. — Priyanka Salve, CNBC, 9 July 2026 Despite the consistent encroachment of technology into the sporting field, greater personalization, and more powerful prediction tools, the unpredictable nature of sports is what keeps fans engaged. — Sam Birchall, Fortune, 9 July 2026 Companies are forced to price an asset whose ultimate operational value remains unpredictable. — Ascend Agency, Chicago Tribune, 9 July 2026 To say gas prices have been unpredictable this year would be an understatement. — Joe Hernandez, NPR, 9 July 2026 See All Example Sentences for unpredictable

Recent Examples of Synonyms for unpredictable

Adjective

Gen Z has experienced inflation, volatile markets and economic uncertainty before many even began their careers.

— Brent Gleeson, Forbes.com, 10 July 2026
Advertisement Even after the war ends, experts expect military spending to rise, driven by an increasingly volatile geopolitical landscape.

— Sarah Yerkes, Time, 10 July 2026

Definition of volatile

Adjective

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
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

Definition of changeful

Adjective

In the first half of the album, Dean explores unstable characters—bearing some resemblance, perhaps, to their indie-sleaze peers—with both second-hand embarrassment and fascination.

— Cassidy Sollazzo, Pitchfork, 13 July 2026
Rhaenyra, queen of the Blacks, seizes the Iron Throne in King’s Landing with the support of Alicent, who has simply had enough of her unstable and terrible sons.

— Jackson McHenry, Vulture, 13 July 2026