Weird fiction is a subgenre of speculative fiction originating in the late 19th and early 20th century. It can be said to encompass the ghost story and other tales of the macabre. Weird fiction is distinguished from horror and fantasy in its blending of supernatural, mythical, and even scientific tropes. British authors who have embraced this style have often published their work in mainstream literary magazines even after American pulp magazines became popular. Popular weird fiction writers included Edgar Allan Poe, William Hope Hodgson, H. P. Lovecraft,Lord Dunsany,Arthur Machen,M. R. James, and Clark Ashton Smith.
Although "weird fiction" has been chiefly used as a historical description for works through the 1930s, the term has also been increasingly used since the 1980s, sometimes to describe slipstream fiction that blends horror, fantasy, and science fiction.
H. P. Lovecraft adopted the term from Sheridan Le Fanu and popularized it in his essays. In "Supernatural Horror in Literature," Lovecraft defines the genre:
The true weird tale has something more than secret murder, bloody bones, or a sheeted form clanking chains according to rule. A certain atmosphere of breathless and unexplainable dread of outer, unknown forces must be present; and there must be a hint, expressed with a seriousness and portentousness becoming its subject, of that most terrible conception of the human brain--a malign and particular suspension or defeat of those fixed laws of Nature which are our only safeguard against the assaults of chaos and the daemons of unplumbed space.
The pulp magazine Weird Tales published many such stories in the United States from March 1923 to September 1954. S. T. Joshi describes several subdivisions of the weird tale: supernatural horror (or fantastique), the ghost story, quasi science fiction, fantasy, and ambiguous horror fiction and argues that "the weird tale" is primarily the result of the philosophical and aesthetic predispositions of the authors associated with this type of fiction.