GNU Collaborative International Dictionary of English

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Found one definition

1.       
   lackadaisical (lăkˌȧ‑dāˈzĭ‑kal), a. [From Lackadaisy, interj.]
   1. Affectedly pensive; languidly sentimental; dreamy.
   
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   2. Lacking spirit or liveliness; lethargic; listless; languid.
   
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   3. Indolent; lazy; idle, especially in a dreamy manner.
   
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    -- Lack`a*dai"si*cal*ly, adv.
   
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