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

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of unpredictable In turn, more pet owners are looking for ways to make those unpredictable pet costs easier to manage, and pet insurance often comes up as a solution to consider. — Angelica Leicht, CBS News, 26 Aug. 2026 Now, the cast for the unpredictable season has been revealed. — Terry Terrones, HollywoodReporter, 26 Aug. 2026 The days before a treatment plan is set can be a confusing and unpredictable time, but know that all the information gathering will be worth it, even if the wait feels unbearable. — Lindy Segal, PEOPLE, 26 Aug. 2026 One humanoid robot managed to successfully play tennis against a human, anticipating unpredictable moves and showing an ability to adapt in a real-world setting. — Mary Randolph, Scientific American, 25 Aug. 2026 See All Example Sentences for unpredictable

Recent Examples of Synonyms for unpredictable

Adjective

One wild card for inflation has been oil prices, which have been volatile due to uncertainty about the war in Iran.

— ABC News, ABC News, 28 Aug. 2026
Citadel’s stock transactions are giving investors a glimpse of how Griffin is navigating an increasingly volatile market.

— Miami Herald, Miami Herald, 28 Aug. 2026

Definition of volatile

Adjective

Risk assessments should examine where a river bends, where slopes are unstable and where a single failure could cut off several communities.

— Victoria Milko, Fortune, 31 Aug. 2026
Significant political risk remains due to Venezuela's unstable government and historical tendency to renege on oil agreements.

— Michael Lynch, Forbes.com, 30 Aug. 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