1620s, insomnie, from Latin insomnia "want of sleep," from insomnis "sleepless," from in- "not" (see in- (1)) + somnus "sleep" (see Somnus). The modern form is from 1758.
实用例句
1. to suffer from insomnia
失眠
来自《权威词典》
2. Worries and tenseness can lead to insomnia.
忧虑和紧张会导致失眠.
来自《简明英汉词典》
3. He is suffering from insomnia.
他患失眠症.
来自《简明英汉词典》
4. However, for one in six people insomnia is a continual problem.
不过在每6个人中便有一人患有持续性失眠症.
来自中级百科部分
5. Ten million Americans are seeking medical help for chronic insomnia.