urban: [17] Urban comes from Latin urbānus, a derivative of urbs ‘city’ (a word of unknown origin). It was preceded into English by urbane [16], which is essentially the same word, but came via Old French urbaine. It was originally used as urban is now, but after urban arrived it gradually took the metaphorical path to ‘smooth, sophisticated’. The derivatives suburb and suburban date from the 14th and 17th centuries respectively; and suburbia was coined in the 1890s. => suburban, urbane[urban etymology, urban origin, 英语词源]