|1.||[ noun ] the trait of acting unpredictably and more from whim or caprice than from reason or judgment|
|Synonyms:||arbitrariness whimsy whimsey capriciousness flightiness|
"I despair at the flightiness and whimsicality of my memory"
|2.||[ noun ] the trait of behaving like an imp|
|Synonyms:||mischievousness puckishness impishness|