dead as a doorknob

形容词 adj.
中文释义

英文释义

形容词 adj.
  1. Entirely, unquestionably or certainly dead.
    — I tried the flashlight, but the battery was as dead as a doorknob.

词源

Possibly from a misinterpretation or misunderstanding of the expression dead as a doornail. See usage notes below.
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