D defs.my
Entry 3 senses Webster, 1913

lackadaisical

/(lăk`ȧ*dā"zĭ*kal)/ · lack·a·dai·si·cal · IPA /ˌlækəˈdeɪzɪkəl/
01 a. Affectedly pensive; languidly sentimental; dreamy.
  1. 1.
    Affectedly pensive; languidly sentimental; dreamy.
  2. 2.
    Lacking spirit or liveliness; lethargic; listless; languid.
  3. 3.
    Indolent; lazy; idle, especially in a dreamy manner.