Upper Peninsula (U.P.) English, also known as Yooper English, or colloquially as Yoopanese, is a variety of American English native to the Upper Peninsula of Michigan (locally abbreviated as "U.P." and the basis for the endonym "Yooper"). Upper Peninsula English is considered a subset of North Central (or Upper Midwestern) English, an American regional dialect, or set of dialects, in transition. Although spoken throughout the U.P., it is primarily spoken in the western U.P., and not all residents use these features. Equally important is the fact that many of these features are found throughout the Upper Midwest, especially in northern Wisconsin and northern Minnesota and to a degree in the northern lower peninsula of Michigan.