Formal:
* शुभ रात्रि (Shubh Raatri): This means "good night" and is a polite way to say "sweet dreams."
* मधुर स्वप्न (Madhur Swapna): This literally translates to "sweet dreams" and is a more direct way to express the sentiment.
Informal:
* मीठे सपने (Meete Sapne): This is a more casual way to say "sweet dreams" and is commonly used among friends and family.
* सुंदर सपने (Sundar Sapne): This translates to "beautiful dreams" and conveys a similar sentiment to "sweet dreams."
Romantic:
* मीठे सपने मेरे प्यारे (Meete Sapne Mere Pyaare): This means "sweet dreams, my love" and is a romantic way to say "sweet dreams."
You can choose the phrase that best suits the situation and your relationship with the person you're talking to.