Bachelor是古代已有的名稱,也是文雅的說法,意思分別有
年青武士"youthful knight, novice in arms," from Old French bacheler, bachelor, bachelier (11c.)
單身武士 "knight bachelor," a young squire in training for knighthood, also "young man; unmarried man," and as
大學學位a university title, of uncertain origin, perhaps from Medieval Latin baccalarius。
以Bachelor為單身貴族在古代的文雅稱呼是恰當的。