FEUD, in our ancient customs, is used for a capital quarrel or comity, not to be satisfied but with the death of the enemy; and thence usually called deadly feud.—Feud, called also feida, and faida, in the original German signifies guerram, i. e. bellum, "war." Lambert writes it feith, and faith it signifies capitales inimicatus, or "implacable hatred."
In Scotland, and the north of England, feud is particularly used for a combination of kindred, to revenge the death of any of their blood, against the killer and all his race, or any other great enemy.