nithing

In Denmark, and through all the North, they provoked a man to fight a duel, by publicly calling him Niding or "infamous†:" for he who had received ſo deep a ſtain, without endeavouring to waſh it out with the blood of his adverſary, would have loſt much more than the life he was ſo deſirous to ſave. [Footnote †: … King William Rufus having occaſion to draw together a ſudden body of forces, only ſent word to all ſuch as held of him in fee, that thoſe who did not repair to his aſſiſtance, ſhould be deemed Nithing; and without further ſummons they all flocked to his ſtandard.]

If a man breaks into another man's house to attack him and kill him, that shall be called a nithing crime. It is a nithing crime if a man slays one to whom he has given pledges of safety. … And in every case when a man is [found] guilty of a nithing crime he shall depart as an outlaw who has forfeited his personal rights and his property to the last penny, land as well as movables.