schnellerem
Schnellerem is a grammatical form of the German adjective schnell. It represents the dative singular ending used with masculine or neuter nouns when the noun is not preceded by a determiner. In other words, it is the strong declension ending -em in the dative case.
In practice, schnellerem appears in phrases such as mit schnellerem Tempo or mit schnellerem Fortschritt, where
Summary and distinction: schnellerem is not a separate lexical item but a specific inflected form of the
See also: German grammar, Adjective declension, Declension of German adjectives.