take to the grave

• Audio (General Australian):

  (file)

take to the grave (third-person singular simple present takes to the grave, present participle taking to the grave, simple past took to the grave, past participle taken to the grave)

1. (idiomatic, transitive) To never reveal (a secret).

   Houdini took his secrets to the grave, as he died shortly after performing one of his most famous escapes.