unmannerly

Not to pay attention to a book this thoughtful might even be considered unmannerly.

I do not remember to have heard if Sugden kicked his unmannerly guest: if he did not, I regret the omission.

Here is the only stanza I can remember of the little poem I composed to express the "unmannerly sadness" of youth.

Well,” said I, “if you have no business at all, I will even be so unmannerly as to shut you out.

I do think you are all the rudest, most unmannerly creatures!

It is the way to do with Jack-o-lanterns when they become unmannerly.