ex·urb \ˈekˌsərb, ˈegˌzərb\noun (-s) Etymology:ex- (I)(out of) + -urb (as in suburb) : a region or district outside a city and usually beyond its suburbs that is inhabited chiefly by well-to-do families < the exurb is generally further from New York than the suburb on the same railway line — A.C.Spectorsky > < the city, the suburbs, and the exurbs — H.S.Commager >