What is a synonym for capricious?

Here are some synonyms for "capricious," depending on the specific nuance you want to convey:

Similar in meaning, but slightly less formal:

* Whimsical

* Fickle

* Erratic

* Unpredictable

* Impulsive

* Changeable

* Mood swings

More formal synonyms:

* Volatile

* Mercurial

* Temperamental

* Arbitrary

* Fanciful

More negative synonyms:

* Unreliable

* Inconsistent

* Unstable

* Unpredictable

The best synonym will depend on the context of your writing. For example, if you're describing someone's personality, "whimsical" might be a good choice. If you're describing the weather, "erratic" might be more appropriate.