#1
capriciousness n. [
unpredictability] the quality of being guided by sudden unpredictable impulses
. wn #2
capriciousness n. [
flightiness, arbitrariness, whimsicality, whimsy, whimsey] 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"
. wn