Используйте «thickheaded» в предложении

1. As thickheaded as he is, Ares has a point

2. I speak in this way, Sancho, to show you that I can shower down proverbs just as well as yourself; and in short, I mean to say, and I do say, that if you don't like to come on reward with me, and run the same chance that I run, God be with you and make a saint of you; for I shall find plenty of squires more obedient and painstaking, and not so thickheaded or talkative as you are