Unpredictable and Uncertain

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

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

Nearby Word: unpredictability

Uncertain

Uncertain adjective - Likely to change frequently, suddenly, or unexpectedly.
Usage example: the stifling heat would occasionally be relieved by an uncertain breeze

Unpredictable is a synonym for uncertain in unstable topic. You can use "Unpredictable" instead an adjective "Uncertain", if it concerns topics such as change, doubtful, volatile, accidental. popular alternative

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