The clerks were helpful and 'courteous'.
He answered my questions 'courteously'.
I appreciated his 'courteousness'.
(..) I just got his email, he answered every question. So? What was he like? - He was fine. - Fine? Just fine? He was very polite, and courteous, very formal and clean. Clean? I mean, he was you know, smart. And intense, kind of intimidating. - I can understand the fascination. (..)2015 Fifty Shades of Grey