unpredictable

/ˌʌnprɪˈdɪktəbəl/

difficult to foresee or anticipate

The weather in this region is unpredictable.

It often changes suddenly, making it hard to plan.

general

Not able to be predicted or foreseen; changeable or uncertain

Her moods are unpredictable; she can be happy one moment and angry the next.

Her emotions change suddenly without clear reasons.

The stock market is highly unpredictable, making it risky for new investors.

Its behavior is hard to forecast, leading to potential losses.

Often used to describe situations, people, or systems that behave in ways that are hard to anticipate.

Collocations

unpredictable behavioractions that are hard to foreseeunpredictable weatherweather that changes suddenlyunpredictable resultsoutcomes that are uncertain

to adapt to unpredictable situations

to be prepared for unpredictable events

Use 'unpredictable' to describe things that are hard to plan for, like weather or human behavior.

While useful, overusing 'unpredictable' can make your writing sound vague. Specify details when possible.

From 'un-' (not) + 'predictable' (able to be predicted), with 'predictable' derived from Latin 'praedicere' (to foretell).

Commonly used in contexts where outcomes or behaviors are hard to anticipate, such as weather, human emotions, or financial markets.

un-

not

prefix

predict

to foresee or foretell

root

-able

able to be

suffix

English Dictionary