How to say "Senior / Junior" in Korean

"선배" (Seonbae) is pronounced "sun-beh" and refers to an older or more experienced person in the same school, company, or field. "후배" (Hubae) is pronounced "hoo-beh" and refers to a younger or less experienced person. These terms denote a specific hierarchical relationship within a shared institution, emphasizing seniority based on entry or experience rather than just age.

You should use "선배" and "후배" within institutional settings like schools, universities, workplaces, or clubs where a clear hierarchy based on entry year or experience exists. It's common for a "후배" to show deference and for a "선배" to mentor and guide. This relationship is a cornerstone of Korean social interaction, extending beyond formal settings into social gatherings.

Yes, there's a significant difference. When addressing a "선배," it's customary to add the honorific "-님" (nim), making it "선배님" (Seonbaenim), to show respect. For a "후배," you typically use their given name followed by "씨" (ssi) or simply their name, depending on closeness and age difference. The level of formality is generally much higher when speaking to a "선배."

While "선배" and "후배" are specific to institutional hierarchies, other terms exist for age. "형" (Hyung) for males addressing older males, "오빠" (Oppa) for females addressing older males, "누나" (Nuna) for males addressing older females, and "언니" (Eonni) for females addressing older females are used in family or close personal relationships, not necessarily institutional ones.

A common mistake is using "선배" or "후배" based solely on age. These terms are primarily for individuals within the *same* specific group (school, company, club) with a shared entry point. Do not use them for someone simply older or younger whom you meet casually. Also, remember the reciprocal obligations: "선배" mentors, "후배" shows deference.