A fuath (; ; lit. ‘hatred'; fuathan; vough, vaugh) is a class of malevolent spirits in Scottish Highland folklore, especially water spirits. In Sutherland was the so-called Moulin na Vaugha/Fouadh, ‘Mill of the Fuath', haunted by the fuath and her son, the amorphous brollachan. The mill was along a stream off Loch Migdale, and belonged to the Dempster family (Skibo Castle) estate. A fuath once seen at this mill was a nose-less banshee with yellow hair wearing a green silk dress; in the story of its capture it was tormented into submission by use of steel (awl, and more effectively by a sewing needle), but it turned to a jellyfish-like mass when light was shone on it. A fuath on the estate farm, encountered on a different occasion, had webbed feet. They sometimes reputedly intermarry with human beings (typically the female), whose offspring have developed a mane and tail. Nomenclature The term "fuath" has been explained to be a generic class of spirits inhabiting the sea, rivers, fresh water, or sea lochs, with several "subspecies" falling under it. The Scottish Gaelic term fuath has been explained to mean 'hatred' or 'aversion', derived from Old Irish fúath 'hate, likeness'. The term is also glossed to mean 'ghost' or 'spectre'. An alternative name for this class of monsters is the arrachd or fuath-arrachd. Generalization Aquatic nature J. F. Campbell characterized the fuath of Sutherland as a water spirit, but it has been stressed by John Gregorson Campbell that the term designates a spectre or goblin more generally, not necessarily of aqueous nature or habitat. Conflated description J. F. Campbell also conflated the traits of the fuath from different accounts in a generalized description of the fuath of Sutherland and this has also fallen under criticism by the other Campbell. Furthermore, J. F. Campbell ascribed the mane and tail to the fuath, though these traits had evidently developed in the human progeny of the Munroe family, to which there was attached a floating rumour that their ancestor had interbred with a fuath several generations back. While it has been generalized that the fuath of the locality wears green, "golden and silken gear" was worn by the weird woman seen plunging into the River Shin was seen by a (games)keeper of the Charlotte Dempster's family. Tales The story of "The Brollachan" (and several of its variant tales) from Sutherland were collected by Charlotte Dempster