- capriciousness, unpredictability - the quality of being guided by sudden unpredictable impulses
--1 is a kind of inconstancy, changefulness
- flightiness, arbitrariness, whimsicality, whimsy, whimsey, capriciousness - 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"
--2 is a kind of irresponsibility, irresponsibleness