Formal:
* Anda lupa. (This is the most formal and direct translation.)
* Lupakah anda? (This is a more polite way to ask "Do you forget?")
Informal:
* Lupa la. (This is a casual and more friendly way to say "You forget.")
* Lupa eh? (This is a more playful way to say "You forget, huh?")
Other possible translations:
* Anda tidak ingat. (This translates to "You don't remember.")
* Anda terlupa. (This means "You forgot.")
The best translation depends on the specific situation. For example, if you are talking to a friend, you might use the informal "Lupa la." But if you are talking to someone you don't know well, you would probably use the formal "Anda lupa."