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 Tressie McMillan Cottom, the New York Times columnist, argues that romance is an answer to an unpredictable real world. — Emma Hinchliffe, Fortune, 26 Oct. 2026 But this year’s hybrid systems have also come under fire for being too complicated and unpredictable. — Jonathan M. Gitlin, ArsTechnica, 26 Oct. 2026 One standout is the Columbia Switchback IV Hooded Packable Jacket; its packable, water-repellant design keeps you prepared for unpredictable fall weather, even when suitcase space is limited. — Rosie Marder, Travel + Leisure, 23 Oct. 2026 When variable interest rates make payments unpredictable HELOCs typically have variable interest rates, meaning borrowing costs can change over time. — Angelica Leicht, CBS News, 22 Oct. 2026 See All Example Sentences for unpredictable

Recent Examples of Synonyms for unpredictable

Adjective

To their credit, the creative minds behind the Absolute series don’t bother masking their politics — an especially bold move for anyone working in an industry with an often reactive and volatile fandom.

— Christopher Cruz, Rolling Stone, 28 Oct. 2026
Still, the prospect of additional supply from American producers remains uncertain, with companies reluctant to commit to major new investments amid volatile prices and geopolitical risks.

— Lee Ying Shan, CNBC, 26 Oct. 2026

Definition of volatile

Adjective

Water essentially acts as a catalyst that spontaneously creates particles known as hydroxyl radicals, unstable molecules linked to aging and disease.

— Michael Hawthorne, Chicago Tribune, 22 Oct. 2026
If a tree appears diseased, unstable or at risk of falling, consider documenting the problem and notifying the owner in writing.

— Sacbee.com, Sacbee.com, 22 Oct. 2026

Definition of unstable

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