Whimsical means playfully odd and unpredictable. A whimsical design, whimsical humour, whimsical and charming.
It is affectionate at moderate strength and dismissive at full — calling a decision whimsical means it was made on a passing fancy, which is a criticism when consequences follow. Of art and design it means charmingly fanciful. Note whim, from which it comes, meaning a sudden idea.
1adjectivewhimsicalPlayfully odd and unpredictable.
“The children's book has whimsical drawings of cats riding bicycles.”
synonyms: fanciful, quirky
whimsical is a quality of playful oddity.
From whimsy + -ical.
Etymology from Wiktionary, CC BY-SA