안녕히 주무세요.
Ahn Nyeong Hee Ju Mu Se Yo.
안녕히 Ahn Nyeong Hee means ‘peacefully’…
주무세요 Ju Mu Se Yo means ‘to sleep’ and it’s a respectful form of verb ‘to sleep’.
Therefore, it means “Please sleep peacefully.”
this what i say to older than me..
you also can say this 잘 자 (Jal Ja) means sleep well..
For couples, it’s pretty common or popular to say “잘 자 내 꿈꿔” (Jal Ja Nae Kkum Kkwar). It means “Good night. Dream of me”
selamat berjaya ^.^~