An expression used to substitute a word with unpleasant or offensive coronation is known as Euphemism.
Answer: The Reverend's preaching style, like his original appearance, is very ordinary so he puts on the veil and leaves his mouth uncovered to be unique and more intriguingoHe had the reputation of a good yet dull preacheroHis listeners pay much more attention to him once he has the veil on because it draws more attention.
