Dis Pater was the Roman god of the underworld and by extension, was often used to refer to death or the afterlife. There are several synonyms that can be used to convey a similar meaning to Dis Pater, such as Hades, Pluto, or the Devil. Other synonyms include Tartarus or Erebus, both of which are Greek words for the underworld. Another term that can be used is the afterworld, which refers to the place where the souls of the deceased go after death. In more poetic language, the great beyond or the other side can also be used to allude to the realm of the dead.