dead as a doornail

dead as a doornail: (비격식)완전히 죽은dead, unusable, finished withex. Their economy is dead as a doornail.그들의 경제는 완전히 죽었다.His career must be as dead as a doornail.이제 경력이 막다른 골목에 도달한 거지.The fish is as dead as a doornail.이 물고기는 완전히 죽었어.This car is dead as a doornail now.이 자동차는 완전히 고장났어. dig one's own grave: 스스로 무덤을 파다to harm oneself; to cause one's failure/ downfallex. To do so is to dig your own grave...