The definition of 'whimsicality' & the word 'whimsicality' in example sentences or phrases

Noun
1
the trait of acting unpredictably and more from whim or caprice than from reason or judgment
  1. I despair at the flightiness and whimsicality of my memory
2
the trait of behaving like an imp

Synonyms of the word 'whimsicality' & Antonyms of the word 'whimsicality'.

Noun
Synonymswhimsey, capriciousness, flightiness, whimsy, arbitrariness, puckishness, mischievousness, impishness,