"one who attends the court of a sovereign," c. 1300, courteour (early 13c. as a surname), from Anglo-French *corteour, from Old French cortoiier "to be at court, live at court," from cort "king's court; princely residence" (see court (n.)).
court
courteous
courtesan
courtesy
courthouse
courtier
courtly
court-marshal
court-martial
courtroom
courtship