This is the 3327th most frequent Turkish word.
istiyorsunuz
"You want" (formal or plural).
The word 'istiyorsunuz' is the second-person plural or formal singular form of the verb 'istemek', which means 'to want'.
Bu kitabı istiyorsunuz.
You want this book.
Here, 'istiyorsunuz' expresses a desire or intention regarding an action, which is 'gitmek' (to leave).
Şimdi gitmek istiyorsunuz.
You want to leave now.
In this case, 'istiyorsunuz' is part of an interrogative sentence asking about the preference or desire for a coffee.