Specter is a noun which means an apparition, a ghost or a haunting presence. Some synonyms for this word include phantom, spirit, ghost, shade, wraith, devil, demon, poltergeist, spook, and phantasm. These words are often used interchangeably in literature and evoke a sense of fear, mystery, and the unknown. The use of synonyms helps writers to add depth and variety to their prose and avoid repetition. Whether used to describe a haunting, spooky atmosphere or a supernatural occurrence, these words allow writers to paint vivid pictures in the minds of their readers.