Switzerland has four national languages. Your greeting depends entirely on which linguistic region you're in.
| Region | Language | Formal | Informal |
|---|---|---|---|
| German-speaking (60%+) | Swiss German | Grüezi (sg), Grüezi mitenand (pl) | Hoi, Sali, Tschau |
| French-speaking (23%) | Swiss French | Bonjour | Salut, Coucou |
| Italian-speaking (8%) | Swiss Italian | Buongiorno | Ciao |
| Romansh-speaking (0.5%) | Romansh | Bun di | Allegra |
When in doubt, a smile and Grüezi or Bonjour will always be polite.