Sentence:  If a man breaks into another man's house to attack him and kill him, that shall be called a <WSD>nithing</WSD> crime. It is a <WSD>nithing</WSD> 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 <WSD>nithing</WSD> 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. 
Meaning of the word marked with <WSD> tags:  Notoriously evil or wicked; infamous.