etiquette, good manners
From Il Galateo, a treatise on good manners by Giovanni della Casa (1503–56) named after the bishop of Sessa Aurunca Galeazzo Florimonte (1484–1565). The name Galeazzo, and its Latinized form Galatheus are cognate with English Galahad.
Practice speaking and memorizing "galateo" and many other words and sentences in Italian.