2. Hasta luego: This is another common way to say goodbye. It is less formal than adiós and is often used when you expect to see the person again soon.
3. Buenas tardes/noches: These phrases are used to say goodbye when you are leaving someone for the day or the night.
4. Hasta la vista: This phrase literally means "until the view (of you)", but it is used to say goodbye in a friendly way. It is often used when you are not sure when you will see the person again.
5. Ciao: This is a more informal way to say goodbye. It is often used among friends and family.