Old High German diutisk

← Proto-Germanic *þiudiskaz (inherited)

← Proto-West Germanic *þiudisk (inherited)

→ German deutsch (inherited)

→ Middle High German diutsc (inherited)

→ East Central German deitsch (inherited)

→ Rhine Franconian deitsch (inherited)

→ Alemannic German tüütsch (inherited)

→ Alemannic German titsch (inherited)

→ Alemannic German töitsch (inherited)

→ Alemannic German titzsch (inherited)

→ Alemannic German tittschu (inherited)

→ Mòcheno taitsch (inherited)

→ Pennsylvania German deitsch (inherited)