#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
vizzz