Why this word is great
DUPPY — [Noun, Verb] In Caribbean folklore, the restless, often vindictive spirit of the dead, believed to roam in specific animal forms or as a malevolent shadow; as a verb, to kill, or to perform with such prowess as to seem supernatural. From Jamaican Creole, circa 18th century, likely from the Bube word dupe ("ghost") or the Akan word adɔpe. Unlike "ghost," a pale and generic term, or "apparition," a clinical descriptor, a duppy is a culturally specific entity governed by rules—it can be set upon an enemy, must be barred from re-entering a house by scattering seeds, and may ride a living person as a horse until dawn. It is the cold spot under the moonlit cotton tree, the phosphorescent glow of a mongoose's eyes in a graveyard, the sudden, silencing grip of dread that precedes a fatal accident—a testament to the belief that the dead do not rest quietly in a land shaped by violent passage, but assert that some pasts are not gone, but waiting.