lack·a·dai·si·cal /ˌlækəˈdezɪkəl/
  (a.)懶麃麃的,愁悶的,感傷的
  lack·a·dai·si·cal a.
  1. Affectedly pensive; languidly sentimental; dreamy.
   -- Lack*a*dai*si*cal*ly, adv.
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  lackadaisical
       adj 1: lacking spirit or liveliness; "a lackadaisical attempt"; "a
              languid mood"; "a languid wave of the hand"; "a hot
              languorous afternoon" [syn: dreamy, languid, languorous]
       2: idle or indolent especially in a dreamy way; "she was
          annoyingly lackadaisical and impractical";
          "a...lackadaisical, spiritless young man-about-town"-
          P.G.Wodehouse