unpredictably

Definitions

In a manner that cannot be foreseen or known beforehand.

In a way that is characterized by frequent, unexpected changes.

Examples

The stock market has been behaving unpredictably over the last few weeks.

The weather in the mountains can change unpredictably, so it is best to be prepared for anything.

Synonyms

erratically capriciously randomly inconsistently volatily fitfully arbitrarily

Antonyms

predictably consistently reliably steadily dependably methodically regularly