whim·si·cal /ˈhwɪmzɪkəl, ˈwɪm-/
  (a.)心情浮動的,反復無常的,古怪的,異想天開的
  Whim·si·cal a.
  1. Full of, or characterized by, whims; actuated by a whim; having peculiar notions; queer; strange; freakish.  “A whimsical insult.”
     My neighbors call me whimsical.   --Addison.
  2. Odd or fantastic in appearance; quaintly devised; fantastic.  “A whimsical chair.”
  Syn: -- Quaint; capricious; fanciful; fantastic.
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  whimsical
       adj : determined by chance or impulse or whim rather than by
             necessity or reason; "a capricious refusal";
             "authoritarian rulers are frequently capricious"; "the
             victim of whimsical persecutions" [syn: capricious, impulsive]