- tschüß (traditional orthography, pronounced with a short vowel)
- tschüß (reformed orthography since 1996, pronounced with a long vowel; chiefly northern Germany)
- tschüs (pronounced with a long vowel; chiefly northern Germany)
- Tschüss was originally common only in northern and central Germany, but it has gained wider acceptance and is now also commonly used in southern Germany, Austria, Switzerland, and South Tyrol. The farewell auf Wiedersehen is often considered more appropriate to use towards strangers and generally in formal situations in Southern Germany. In northern and central Germany, tschüss is a standard goodbye in all but official situations, with the north preferring the older form tschüß.