How do you spell Thank teacher in Korean?

There isn't a single perfect translation for "Thank you, teacher" in Korean that captures the nuance of the English phrase. The best way to say it depends on the level of formality and your relationship with the teacher.

Here are a few options:

* 선생님, 감사합니다 (Seonsaengnim, gamsahamnida): This is the most common and polite way to say "Thank you, teacher." `선생님 (seonsaengnim)` means "teacher" and is respectful. `감사합니다 (gamsahamnida)` means "thank you." This is suitable for most situations.

* 선생님, 고맙습니다 (Seonsaengnim, gomawsseumnida): Similar to the above, but slightly less formal. `고맙습니다 (gomawsseumnida)` is also "thank you," but a bit more casual. Still perfectly respectful for a teacher, but might be preferred in a slightly less formal setting.

* 선생님, 감사해요 (Seonsaengnim, gamsahaeyo): This is a more informal way to say "thank you, teacher," suitable if you have a close relationship with your teacher or are speaking to a younger teacher.

In short, 선생님, 감사합니다 (Seonsaengnim, gamsahamnida) is the safest and most generally appropriate choice.