查词历史：

lethargic lethal lethal factor

lethargic
[英] [leˈθɑ:dʒik] [美] [ləˈθɑrdʒɪk] 生词本

adj.

  • 柯林斯高阶英汉双解学习词典

  • 英英释义

1. ADJ-GRADED 慵懒的；没精打采的；懒洋洋的 If you are lethargic, you do not have much energy or enthusiasm. 

  • He felt too miserable and lethargic to get dressed.

    他心情低落，无精打采，完全没有心思穿衣整装。

Adjective

1. deficient in alertness or activity;

  • "bullfrogs became lethargic with the first cold nights"