The phrase "hush as death" often refers to a deep and eerie silence that can be unsettling. There are several synonyms for this phrase that can be used to describe this kind of silence. Some of these synonyms can be "silence as the grave," "stillness like a tomb," "quiet as a cemetery," or "peaceful silence." All of these phrases evoke a sense of stillness and quietness that is almost palpable. They can be used to describe a situation when everything around is silent and dormant, such as a cemetery or a deserted street at night. These powerful phrases help to create vivid imagery in the reader's mind and convey an eerie atmosphere that is often associated with death.