| 单词 | lackadaisical |
| 释义 | lackadaisicallackadaisical /ˌlækəˈdeɪzɪkəl/ adjective not showing enough interest in something or not putting enough effort into it: a lackadaisical approach to security [Origin: 1700–1800 lackaday expression of sadness (17–19 centuries), from alack the day] |
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