From whimsy +‎ -ical.

• (Received Pronunciation) IPA^(key): /ˈwɪmzɪkəl/

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• Hyphenation: whim‧si‧cal

whimsical (comparative more whimsical, superlative most whimsical)

1. Given to whimsy.

   Synonyms: idiosyncratic, outlandish, peculiar, pixilated, playful, quirky, unconventional; see also Thesaurus:witty

   • 1813 January 27, [Jane Austen], Pride and Prejudice:[…], volume (please specify |volume=I to III), London: […] [George Sidney] for T[homas] Egerton,[…], →OCLC:

     "But perhaps he may be a little whimsical in his civilities," replied her uncle. "Your great men often are; and therefore I shall not take him at his word, as he might change his mind another day, and warn me off his grounds."

   • 1903 October 31, A[rthur] Conan Doyle, “The Adventure of the Norwood Builder”, in The Return of Sherlock Holmes, New York, N.Y.: McClure, Phillips & Co., published February 1905, →OCLC:

     Mr. Sherlock Holmes was leaning back in his chair after his whimsical protest, and was unfolding his morning paper in a leisurely fashion, […].

   • 1854 August 9, Henry D[avid] Thoreau, Walden; or, Life in the Woods, Boston, Mass.: Ticknor and Fields, →OCLC:

     The childish and savage taste of men and women for new patterns keeps how many shaking and squinting through kaleidoscopes that they may discover the particular figure which this generation requires today. The manufacturers have learned that this taste is merely whimsical.

   • 1905, Edith Wharton, The House of Mirth, New York, N.Y.: Charles Scribner’s Sons, →OCLC:

     Her lips wavered into a smile—she had been distracted by the whimsical remembrance of the confidences she had made to him, two years earlier, in that very room.

   • 1919, Christopher Morley, “(please specify the page)”, in The Haunted Bookshop, Garden City, N.Y.: Doubleday, Page & Company, →OCLC:

     Lovers of the movies may well date a new screen era from the day those whimsical pantomimers set their wholesome and humane talent at the service of the arc light and the lens.

   • 1961, Harry E. Wedeck, Dictionary of Aphrodisiacs, New York: The Citadel Press, page iii:

     Even the putatively innocuous whimsical shapes and designs of cakes and pastry, notably in Central Europe, retain to this day the phallic concept[.]

   • 2020 September 25, Charles Hugh Smith, The Road to Nowhere: Whatever Can't Be Politicized Ceases to Exist‎^[1]:

     There is nothing innocuous, innocent or whimsical in a Totalitarian society, at least in the public sphere.

• whimsical sex

• whimsically