How do you say goodbye in French?

There are several ways to say goodbye in French, depending on the context and formality:

Formal:

* Au revoir: This is the most common and formal way to say goodbye. It literally translates to "until we see each other again."

* Bonne journée: This means "Have a good day."

* Bonne soirée: This means "Have a good evening."

* Bonne nuit: This means "Good night."

Informal:

* Salut: This is a casual way to say goodbye, similar to "bye" in English.

* Ciao: This is a very informal way to say goodbye, borrowed from Italian.

* À plus tard: This means "See you later."

* À bientôt: This means "See you soon."

Other options:

* Je vous souhaite une bonne journée/soirée/nuit: This is a very polite way to say goodbye, meaning "I wish you a good day/evening/night."

* On se retrouve plus tard/bientôt: This means "We'll see each other later/soon."

The best way to say goodbye depends on the situation and your relationship with the person you're talking to.