yooper/ˈjuːpəɹ/EtymologyFrom U.P. (“Upper Peninsula”) + -er.yooper means A native or inhabitant of the Upper Peninsula of Michigan. Lexicurio rates it Sui generis — a strength score of 87 out of 100.yooper is pronounced /ˈjuːpəɹ/.nounA native or inhabitant of the Upper Peninsula of Michigan.