whimsey

Definitions of whimsey
1

n an odd or fanciful or capricious idea

Synonyms:
notion, whim, whimsy
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, whimsicality, whimsy
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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