Formal:
* 환영합니다 (Hwan-yeong-hamnida): This is the most formal way to say welcome, used in professional settings or when addressing someone older or of higher status.
* 어서 오세요 (Eoseo oseyo): This is a slightly less formal but still polite way to say welcome, often used in shops or restaurants.
Informal:
* 어서 와 (Eoseo wa): This is a casual and friendly way to say welcome, used among friends or family.
* 반가워 (Bangagawa): This is a very casual and friendly way to say welcome, used among close friends.
Other options:
* 잘 오셨어요 (Jal oseotseoyo): This is a polite way to say "welcome" after someone has arrived at a place.
* 오신 것을 환영합니다 (Osin geoseul hwan-yeong-hamnida): This is a formal way to say "welcome" that emphasizes the arrival of the person.
The best way to choose the right phrase depends on the situation and your relationship with the person you are greeting.