lackadaisical
Word family adverblackadaisicallynounlackadaisicalnessadjectivelackadaisicalinterjectionlackadaisy
lack·a·dai·si·cal /ˌlækəˈdeɪzɪkəl◂/ adjectiveadjINTERESTEDnot showing enough interest in something or not putting enough effort into it 無精打采的;懶散的David has a rather lackadaisical approach to his work. 戴維的工作態度有點懶散。
Origin lackadaisical (1700-1800) lackaday expression of sadness ((17-19 centuries)), from alack the day