Avernooften

Avernooften is a fictional term used in speculative fiction and tabletop role-playing contexts to describe a boundary state or material associated with infernal or liminal forces. The term functions as a variable concept rather than a fixed entity, with its properties defined by each author or game designer.

Etymology: The name blends Averno, a reference to the underworld from Italian and Latin tradition, with a suffix coined for emphasis.

In its most common usage, Avernooften denotes either a volatile substance, a haunted locale, or a mental state that enables temporary access to infernal energies or memories. It is described as unstable and dangerous, often requiring ritual or specialized equipment.

In literature and games, Avernooften provides a narrative mechanism to explore moral ambiguity, sacrifice, and the consequences of meddling with forbidden forces. Interpretations vary by setting, from a mineral that glows with inner fire to a mist that distorts time.

See also: liminal space, infernal realms, threshold concepts.