Language/Spanish/Vocabulary/How-to-Say-Good-Bye

In Spanish there are many ways to say goodbye.

Adiós	Formal (boss, unknown person, elderly)
Hasta luego
Chao	Informal (family, friends)
Hasta la próxima
Nos vemos
Hasta la vista	This is another way of saying goodbye in an almost formal way.
Hasta mañana	This is another way of saying goodbye in an almost formal way.
Hasta pronto	This is another way of saying goodbye in an almost formal way.
Hasta otra oportunidad	This is another way of saying goodbye in an almost formal way.