IPA: //ˌwɪmzɪˈkælɪti//
KK: /ˌwɪmzɪˈkælɪti/
The quality of being playful, imaginative, or fanciful, often in a way that is unusual or unexpected.
The whimsicality of the artist's work made it stand out in the gallery.
Whimsicality is formed from "whimsy" (from Old English *hwimor*, meaning a sudden desire or fancy) and the suffix "-cality" (from Latin *-calitas*, meaning quality or state). The word refers to the quality or state of being whimsical, characterized by playful or fanciful ideas.
Think of 'whimsy' as a sudden fancy or playful idea, and remember that 'whimsicality' describes the quality of having such playful ideas.