exhibiting courtesy and politeness; "a nice gesture"
characterized by courtesy and gracious good manners; "if a man be gracious and courteous to strangers it shows he is a citizen of the world"-Francis Bacon
(courteously) politely: in a polite manner; "the policeman answered politely, `Now look here, lady...'"
Etiquette (pronounced [eti'ket]) is a code of behavior that delineates expectations for social behavior according to contemporary conventional norms within a society, social class, or group. The French word étiquette, signifying ticket (of admission, etc.) first appeared in English in 1750.
Showing regard or thought for others; especially, displaying good manners or etiquette
(courteousness) The characteristic of being courteous