This article unifies two adjectival phenomena of Germanic languages: the double definiteness of Norwegian, Swedish, and Faroese, and the attributive-only inflection of West Germanic adjectives. I argue that the functional head Agr(eement) is responsible for both. Since Agr can perform only one of these two functions in a given language (the second definiteness marker of Scandinavian and the attributive inflection of West Germanic), these two phenomena are in complementary distribution.*