capriciously

Definitions

In a way that is governed by or subject to whim or unpredictable impulses.

In a manner characterized by sudden, unaccountable changes of mood or behavior.

Examples

The weather changed capriciously, shifting from bright sunshine to a torrential downpour within minutes.

He decided capriciously to quit his stable job and travel the world without a concrete plan.

Synonyms

arbitrarily whimsically erratically impulsively ficklely unpredictably randomly

Antonyms

consistently steadily deliberately predictably methodically reliably purposefully