What, for example, can be more ill-bred than to say, Who are you?
I could not have been more clumsy, more ill-bred, or more unfortunate.
Always wipe your mouth before drinking, as nothing is more ill-bred than to grease your glass with your lips.
It is rude to laugh at mistakes or awkwardness: nothing is more ill-bred as well as unkind.
This is a breach of good-breeding often ...