ill-bred

To converse with an entirely uneducated person upon literature, interlarding your remarks with quotations, is ill-bred.

Such conduct is not only excessively ill-bred, but intensely selfish.

It is annoying and ill-bred to throw your soiled clothes into the family wash.

This is a breach of good-breeding often committed, and nothing can be more ill-bred.

To object to the dish itself is an insult to your entertainers, and if you assert any reason for your own dislike it is ill-bred.