disapproval If you describe someone as an ignoramus, you are being critical of them because they do not have the knowledge you think they ought to have. ignoramuses someone who does not know about things that most people know about
We are ignorant; we ignore; being the word formerly written on a bill of indictment by a grand jury when there was not sufficient evidence to warrant them in finding it a true bill
One who ignores the knowledge of something; one really unacquainted with it It is an ancient law term The grand jury used to write lgnoramus on the back of indictments "not found" or not be sent into court Hence ignore The present custom is to write "No true bill "