1. capriciousness, unpredictability, inconstancy, changefulness

usage: the quality of being guided by sudden unpredictable impulses

2. flightiness, arbitrariness, whimsicality, whimsy, whimsey, capriciousness, irresponsibility, irresponsibleness

usage: the trait of acting unpredictably and more from whim or caprice than from reason or judgment; "I despair at the flightiness and whimsicality of my memory"

WordNet 3.0 Copyright © 2006 by Princeton University.
All rights reserved.