Sentence:  The like, ' de mot en wot,' to the barons, bailiffs, men and entire community of the port of Sanwich and its members with 'conclusion' ordering them, on their faith an loyalty, to cause the truce to be firmly observed in all its points, and forbidding them and each of them, under pain of forfeiture of life and limb and of all that they can forfeit, to <WSD>commit grievance</WSD>, damage, wrong or molestation by land or by sea, openly or secretly, upon any merchant or other of whatsoever estate or condition he may be of the realm of France or of theother lands of the king of France. 
Meaning of the word marked with <WSD> tags:  Violation of regulations or objectionable behavior.