lackadaisical

 
Pronunciation: /ˌlakəˈdeɪzɪk(ə)l/

adjective

  • lacking enthusiasm and determination; carelessly lazy: a lackadaisical defence left Spurs adrift in the second half

Derivatives

lackadaisically

adverb

Origin:

mid 18th century (also in the sense 'feebly sentimental'): from lackaday or its obsolete extended form lackadaisy