Sentence:  Noblemen loyal to King Milo <WSD>inveighed</WSD> upon him, until at last he sent off dispatches to King Audry and King Aillas, alerting them to the peculiar rash of forays, raids and provocations current along the Lyonesse border. 
Meaning of the word marked with <WSD> tags:  or occasionally (about), formerly also with (on), (at), (upon) To complain loudly, to give voice to one's censure or criticism (from 16th c.)