Origin of lackadaisical
Examples from the Web for lackadaisically
But everything had not gone well, and he found it very difficult to carry himself otherwise than lackadaisically.The Small House at Allington|Anthony Trollope
Word Origin for lackadaisical
1768 (Sterne), from interjection lackadaisy "alas, alack" (1748), an alteration of lack-a-day (1690s), from alack the day (1590s). Hence, "given to crying 'lack-a-day,' vapidly sentimental." Sense probably altered by influence of lax. Related: Lackadaisically.