still as death

(as) still as death

Completely motionless; having no movement whatsoever. The forest was completely silent and still as death, and it sent shivers right down my spine. I remained as still as death so the burglar wouldn't know I was in the room.
See also: death, still
Farlex Dictionary of Idioms.

*still as death

Cliché immobile; completely still. (The reference to death gives this expression ominous connotations. *Also: as ~.) George sat as still as death all afternoon. When the storm was over, everything was suddenly still as death.
See also: death, still
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • (as) still as death
  • a different ball of wax
  • wax
  • fall for
  • fall for (someone or something)
  • squeaky
  • squeaky clean
  • lonesome
  • at sea about (something)
  • at the end of your tether