单词	lackadaisical
释义	lackadaisicallack‧a‧dai‧si‧cal /ˌlækəˈdeɪzɪkəl◂/ adjective Word Origin WORD ORIGINlackadaisical Origin: 1700-1800 lackaday expression of sadness (17-19 centuries), from alack the day Examples EXAMPLES FROM OTHER DICTIONARIES a lackadaisical approach to security not showing enough interest in something or not putting enough effort into it:  David has a rather lackadaisical approach to his work.
随便看	whetstone whew whey Which? which whichever Whicker, Alan whiff Whig while While shepherds watched their flocks by night whilst whim whimper whimsical whimsically whimsy whine whinge whinger whinny whip whiplash whipped cream whippersnapper

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