Arrivederla is the most formal way to say goodbye and is best used when talking to persons in authority or to older people. Meanwhile, arrivederci is less formal—a step down from arrivederla. It's best used when the person you're talking to thinks arrivederla is too formal.

What is the difference between Ciao and Arrivederci?

Ciao is very informal, while arrivederci is more formal. Also, ciao means both "hello" and "goodbye", whereas arrivederci only means "goodbye".

Is Arrivederci goodbye or hello?

1. Arrivederci / ArrivederLa. One of the very first words you'll learn for goodbye in Italian is arrivederci, and as expressions go, it is pretty safe to use at any formal occasion. Formed from the reflexive verb rivedersi, it literally means to see each other again.