thick-skulled

Or you, you great, thick-skulled oaf of Geneva, or the Sorbonnist with the bald head and the eyes that look and see nothing?

The devil cannot hold him; now will this thick-skulled master of mine tell the whole story to his rival!

A Titan had thrown mountains of irony upon the heads of a thick-skulled generation of vipers.

Having white blood in her veins, Sal had an imagination far beyond her dull, thick-skulled people.

Even so, the writer utterly disowns rating of Slippy McGees as thick-skulled savages predestined for incurable criminousness.