lackadaisical

languid, languorous, lackadaisical, listless, spiritless mean lacking energy or enthusiasm. languid refers to an unwillingness or inability to exert oneself due to fatigue or physical weakness <was depressed and languid for weeks after surgery>. languorous suggests a dreamy boredom and delicacy that avoids unnecessary activity <languorous cats lying in the sun>. lackadaisical implies a carefree indifference marked by halfhearted efforts <lackadaisical college seniors pretending to study>. listless suggests a lack of interest caused by physical weakness or dissatisfied boredom <listless hospital patients> <listless children flipping through picture books on a rainy day>. spiritless refers to a lack of animation or vigor that gives one's actions and words life <a spiritless recital of the poem>.