Surely he didn't intend to be verbally invisible the entire visit.
Invitations can be issued verbally, over the telephone, or even via email.
Already in 1087 and 1088 he had appealed to Baldwin of Flanders, verbally and by letter,' for troops; and Baldwin had answered the appeal.
The only time I have heard him swearing or be verbally abusive has been in the presence of his mother.
The youngest will be verbally aggressive if I suggest anything regarding getting some gainful employment, and will blame me for all his misfortunes.
