Back of beyond is an idiom that refers to remote and isolated places. It is a phrase used to describe areas that are far from urban settlements or places that are hard to reach. Some common synonyms for back of beyond include the term outback, boonies, hinterland, wilderness, and the sticks. Other terms that can be used to describe remote places include the terms wilderness, desolate, remote, and inaccessible. These synonyms can be used to describe places that are lonely, isolated and remote. They are useful when describing where someone lives or works in a place that is far from civilization or urban settlements.