lackadaisical
adjective /ˌlækəˈdeɪzɪkl/
/ˌlækəˈdeɪzɪkl/
- not showing enough care or enthusiasm
- He has a lackadaisical approach to finding a job.
Word Originmid 18th cent. (also in the sense ‘feebly sentimental’): from lackaday (or its obsolete extended form lackadaisy).