Here's the answer:
“おやすみ”
(oyasumi)
Watch a real native speaker say it:
Here's how it sounds in a textbook:
Fun fact: the hundreds of thousands of people learning Japanese with Memrise get this phrase correct 92.12% of the time!
(oyasumi)
Fun fact: the hundreds of thousands of people learning Japanese with Memrise get this phrase correct 92.12% of the time!