whimsy

Whimsy is what a person who's a dreamer and out of step with the real world might have lots of. People who are full of whimsy are odd, but often fanciful and lovely, like Harry Potter's friend Luna Lovegood.

Whimsy is also a whim — something you do just because you want to. If you find a postcard of Alaska and take that as a reason to move there, that could qualify as whimsy. Whimsy is irrational, but playful. If you decorate your house with whimsy, you may have a wall decorated with butterflies and giant daisies with googly eyes, and a couch trimmed with peacock feathers and vinyl. It's amusing and witty, and you’re a master of whimsy.

Definitions of whimsy
1

n an odd or fanciful or capricious idea

“he had a whimsy about flying to the moon”
whimsy can be humorous to someone with time to enjoy it”
Synonyms:
notion, whim, whimsey
Type of:
idea, thought
the content of cognition; the main thing you are thinking about

n the trait of acting unpredictably and more from whim or caprice than from reason or judgment

Synonyms:
arbitrariness, capriciousness, flightiness, whimsey, whimsicality
Type of:
irresponsibility, irresponsibleness
a form of untrustworthiness; the trait of lacking a sense of responsibility and not feeling accountable for your actions

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