Unstable and Unpredictable

Unstable

Unstable adjective - Likely to change frequently, suddenly, or unexpectedly.
Usage example: financial investors don't like an unstable economy

Unpredictable is a synonym for unstable in change topic. In some cases you can use "Unpredictable" instead an adjective "Unstable", when it comes to topics like doubtful, changeable. popular alternative

Nearby Word: unstably

Unpredictable

Unpredictable adjective - Likely to change frequently, suddenly, or unexpectedly.
Usage example: unpredictable spring weather that makes it really hard to know what to wear

Unstable is a synonym for unpredictable in change topic. You can use "Unstable" instead an adjective "Unpredictable", if it concerns topics such as changeable, erratic. popular alternative

Nearby Word: unpredictability
Cite this Source
Unpredictable and Unstable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/unstable/unpredictable
Unstable & Unpredictable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/unstable/unpredictable>.
Unpredictable or Unstable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/unstable/unpredictable.
Google Ngram Viewer shows how "unstable" and "unpredictable" have occurred on timeline