Formal:
* శుభరాత్రి (Shubharatri): This is the most common and formal way to say good night. It literally translates to "good night."
* శుభరాత్రి శుభాకాంక్షలు (Shubharatri Shubhaakankshalu): This is a more elaborate way to say good night, literally meaning "good night wishes."
Informal:
* గుడ్ నైట్ (Gud night): This is the anglicized version, commonly used among younger people.
* లేచిపో (Lechipo): This literally means "go to sleep," and is a more casual way to say good night.
* నీకు శుభరాత్రి (Nee ku Shubharatri): This means "good night to you," and is a more personal way to say good night.
The best way to say "good night" in Telugu will depend on the situation. If you are speaking to someone you are not familiar with, it is best to use the formal phrase. If you are speaking to someone you know well, you can use a more informal phrase.