"Hello, sir!"

Translation: Merhaba, beyefendi!

[Nuni74477]

Evet merhaba is the formal way and selam used for informal greeting

[jzlcdh]

Do people really mix informal and formal like that? If so when or who with? I never heard it but perhaps I move in different circles.

[Ektoraskan]

Merhaba isn't informal, though? It's suitable for every register.

[drumwhacker]

I think 'selam' is more an informal greeting, doğru?

[MetroWestJP]

I heard Büşra, the Turkish linguist on the Turkish Tea Time podcast, use "merhabalar" to great a shop owner, saying it was a more formal way to say "merhaba," but I don't know how common it is or if it's a regional thing.

[Henk974409]

I've learned Turks are used to use the first name. Don't know how true this is but in the hospital I work it is Doctor Sinan instead of Doctor Göker which is his last name.