Courteous

Chamber's Etymological of the English Language · 1895 · p. 111

kurt'yus, adj. of tourtdike manners polite respectful obliging, adv. Court OOUSly. —11 Court'eousne Courtesan, Courtezan, kurt'e-zan, n a fashionable prostitute. [Sp. cortcsana—iorte, court See Court Courtesy, kurt'e-si, courtline : elegance of manner an act of civility or respect.