The word "apparitional" means ghostly, supernatural, or otherworldly. Synonyms for "most apparitional" could include "most spectral," "most phantasmal," "most eerie," "most haunting," "most elusive," "most ethereal," or "most transcendental." Each of these words describes something that is beyond the natural or physical realm, giving the impression of a ghostly presence or otherworldly phenomenon. The use of synonyms can help writers to vary their language and create a more vivid and engaging story or piece of writing. Whether describing a haunted house or a spiritual experience, these words can help convey a sense of mystery and wonder.