Postmortal is a term that refers to something that occurs after death. However, there are several other words that can be used instead of postmortal. One example is posthumous, which refers to something that happens or is published after the death of the person who created it. Another related term is afterlife, which refers to the belief in an existence beyond death. Alternatively, the word post-mortem is often used when describing an analysis or examination that takes place after someone's death, particularly in a medical or legal context. There are also more poetic terms like eternal rest or passing on, which describe the state of being that occurs after death.