Formal:
* До свидания (Do svidaniya): This is the most common and formal way to say goodbye. It literally translates to "until we meet again."
* Прощайте (Proschayte): This is a more formal and slightly more poetic way to say goodbye, often used in writing or for more serious situations. It literally means "farewell."
Informal:
* Пока (Poka): This is the most common informal way to say goodbye, equivalent to "bye" in English.
* До встречи (Do vstrechi): This means "until we meet again" and is slightly more formal than "Пока."
* Всего хорошего (Vsego horoshego): This means "all the best" and is a friendly way to say goodbye.
* Удачи (Udachi): This means "good luck" and is a common way to say goodbye to someone who is leaving on a journey.
Other:
* Спокойной ночи (Spokoynoy nochi): This means "good night" and is used when saying goodbye at the end of the day.
The best way to say goodbye in Russian will depend on the specific situation and your relationship with the person you are speaking to.