whimsicality
whim-si-cal-i-ty
noun
The quality or state of being whimsical; a charmingly playful or unpredictable nature.
"The film's whimsicality delighted the audience."
Thesaurus
Synonyms: capriciousness, whimsey, arbitrariness, whimsy, flightiness, puckishness, impishness, mischievousness