In folklore, a revenant is an animated corpse that is believed to have revived from death to haunt the living.[6][7] The word revenant is derived from the Old French word, revenant, the "returning" (see also the related French verb revenir, meaning "to come back").
Revenants are part of the legend of various cultures, including Old Irish Celtic and Norse mythology,[8] and stories of supposed revenant visitations were documented by English historians in the Middle Ages.[9]