dead as a doornail

dead as a doornail
25. dead as a doornail<非正式> 完全死了的；确实死了的
- Is he really dead?—Dead as a doornail, old fellow. 他真的死了吗？——确实死了, 老兄。
See: dead

- 英语>简体中文, 英汉大词典

dead as a doornail
adj. phr.
Completely dead without the slightest hope of resuscitation. 完全死了的；确实死了的。
- This battery is dead as a doornail; no wonder your car won't start. 蓄电池一点电也没有了；难怪你的汽车发动不起来。