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 The Clancy case sparked a national conversation about postpartum mental health, and Patrick's testimony speaks to the unpredictable nature of some mental health issues in general, according to mental health experts. — Charles Trepany, USA Today, 30 July 2026 One of the most eclectic bands on the scene, the four-piece mixes rock, punk, and hip-hop, and have earned a reputation for unpredictable concerts. — Joseph Hudak, Rolling Stone, 29 July 2026 Because of the unpredictable nature of these fires, authorities evacuated more than 200,000 people before the flames could threaten communities. — Npr's International Desk, NPR, 29 July 2026 The researchers still need to test the tech on an active, free-flying aircraft in unpredictable outdoor conditions. — Mrigakshi Dixit, Interesting Engineering, 29 July 2026 See All Example Sentences for unpredictable

Recent Examples of Synonyms for unpredictable

Adjective

Inflation remains volatile in many countries, reflecting varied conditions in markets around the world.

— John M. Bremen, Forbes.com, 31 July 2026
Beyond the oil and gas industry, major banks including JPMorgan are making record profits during the ongoing war thanks to heavy trading volumes as investors rush to dump volatile assets or buy the dip.

— Victor Tangermann, Futurism, 30 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

Also screening is Andrey Zvyagintsev’s Minotaur, another feature from Cannes, following a successful company director called Gleb, who finds himself under siege from mounting corporate pressures and an increasingly unstable world.

— Lily Ford, HollywoodReporter, 3 Aug. 2026
Federal prosecutors said the men exploited three girls who had run away from foster care, taking advantage of their ages, unstable living situations and lack of family support.

— Eric Weiss, Sun Sentinel, 3 Aug. 2026