listless
/ˈlɪstlɪs/adjective
- (of a person or their manner) lacking energy or enthusiasm（人, 行为方式）缺乏活动（或热情）的, 无精打采的：
bouts of listless depression.
一阵阵无精打采的抑郁情绪。
派生词
listlessly
adverblistlessness
noun词源
Middle English: from obsolete list 'appetite, desire' +-LESS.