Suffixaufnahme (German: [ˈzʊfɪksˌaʊfˌnaːmə], "suffix resumption"), also known as case stacking, is a linguistic phenomenon used in forming a genitive construction, whereby prototypically a genitive noun agrees with its head noun. It was first recognized in Old Georgian and some other Caucasian and ancient Middle Eastern languages as well as many Australian languages, and almost invariably coincides with agglutinativity.