Most back-country refers to areas that are remote, rural, and away from civilization. The antonyms for the word most back-country are highly populated, urban, and metropolitan. An urban area is a city or town that is highly populated with skyscrapers, busy streets, and many amenities. Metropolitan implies the areas or suburbs surrounding a city, and it, too, is highly populated. These are places where there is a lot of movement, bustle, and activity. The antonyms to most back-country are areas that are more developed, have higher population densities, and are more commercial with a significant concentration of people living and working.