There are many synonyms you can use to describe the region known as "the frozen North". One common synonym is the Arctic, which refers to the area around the North Pole. Another synonym is the subarctic, which encompasses areas just south of the Arctic Circle. You could also use the term polar region, which includes the northernmost parts of the world. Other synonyms for the frozen North may include frigid zone, tundra, or icy wasteland, all of which emphasize the challenging environment and extreme cold temperatures of this vast region. Whether you're writing an article, a novel, or simply describing a winter landscape, these synonyms can help you convey the rugged beauty and unique character of the frozen North.