[1] : The Collaborative International Dictionary of English v.0.48

lackadaisical \lack`adai"sical\ la^k`.ad=a"zi^kal,
   a. from lackadaisy, interj.
   1. affectedly pensive; languidly sentimental; dreamy.
      1913 webster

   2. lacking spirit or liveliness; lethargic; listless;
      languid.
      pjc

   3. indolent; lazy; idle, especially in a dreamy manner.
      pjc -- lack`adai"sically, adv.
      1913 webster
see also:
lackadaisy lack`adai"sically 

[2] : WordNet (r) 2.0

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
see also:
dreamy languid languorous 

[3] : Moby Thesaurus II by Grady Ward, 1.0

119 moby thesaurus words for "lackadaisical":
   micawberish, apathetic, ataractic, backward, benumbed, blase,
   bored, careless, casual, cold, cool, dallying, dead, debilitated,
   degage, delaying, devil-may-care, dilatory, dillydallying,
   disinterested, dispassionate, disregardful, dopey, dormant, droopy,
   drugged, dull, easy, easygoing, emasculated, enervated, exanimate,
   faineant, foot-dragging, free and easy, heavy, hebetudinous,
   heedless, idle, inactive, inanimate, inattentive, incurious,
   indifferent, indolent, inert, inexcitable, insouciant, jaded,
   laggard, lagging, languid, languishing, languorous, lax, lazy,
   leaden, lethargic, lifeless, limp, lingering, listless, loitering,
   lukewarm, lumpish, mindless, moribund, negligent, nonchalant, numb,
   offhand, passive, perfunctory, phlegmatic, pococurante, pooped,
   procrastinating, procrastinative, procrastinatory, reckless,
   regardless, remiss, romantic, sated, sentimental, shuffling, slack,
   sleepy, slothful, slow, sluggish, somnolent, spiritless, stagnant,
   stagnating, stultified, supine, tepid, torpid, turned-off,
   unanxious, uncaring, unconcerned, undiscriminating, unemotional,
   unenthusiastic, unexcitable, unexcited, unimpressed, uninspired,
   uninterested, unmindful, unmoved, unsolicitous, vegetable,
   vegetative, wan, weary, world-weary

Lackadaisical >> L Words
Lackadaisical, definition of term: Lackadaisical
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