Formal/Neutral:
* 미쳤어요 (michyeosseo): This is the most common and polite way to say "you are crazy." It's often used for lighthearted situations or when you're addressing someone older or of higher status.
* 제정신이 아니세요 (jejeongsin-i aniseyo): This translates literally to "you are not in your right mind." It's a more formal and serious way to say "you are crazy," implying that someone is acting irrationally.
Informal/Casual:
* 미쳤어 (michyeo): This is the informal version of "michyeosseo" and is used with close friends or family.
* 돌았어 (dorasseo): This is a more informal and colloquial way to say "you are crazy," meaning "you've gone crazy" or "you're nuts."
* 정신 나갔어 (jeongsin nagasseo): This literally means "you've lost your mind." It's a more direct and stronger way to say "you are crazy," often used in a playful or humorous context.
Important Note: The choice of expression depends on the context and your relationship with the person you're talking to. It's always best to use the most appropriate and respectful language based on the situation.