WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
the trait of acting unpredictably and more from whim or caprice than from reason or judgment
Word Usage
"Right mindfulness serves as an antidote to rid the mind forever of the auxiliary disturbing emotions and attitudes (nye-nyon), such as flightiness of mind and mental dullness, that an accustoming pathway mind gets rid of, namely the automatically arising ones."