This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Determined by, arising from, or marked by whim or caprice. See Synonyms at arbitrary.

adj. Erratic in behavior or degree of unpredictability: a whimsical personality.

adj. Given to whimsy; capricious; odd; peculiar; playful; light-hearted or amusing.

adj. Full of, or characterized by, whims; actuated by a whim; having peculiar notions; queer; strange; freakish.

adj. Odd or fantastic in appearance; quaintly devised; fantastic.

Full of whims; freakish; having odd fancies or peculiar notions; capricious.

Odd; fantastic.

Synonyms Singular, Odd, etc. (see eccentric), notional, crotchety.

Fanciful, grotesque.

adj. determined by chance or impulse or whim rather than by necessity or reason

"I feel Dustin would hate the word whimsical to describe anything he's written, but it's given me that sort of delight on a random Tuesday afternoon."

arbitrary   

whimsical sex   

fanciful    capricious    fantastic    quaint    queer    strange    freakish    witty   

childish    humorous    capricious    bizarre    playful    fantastic    ludicrous    quaint    foolish    eccentric