What does sunbaenim mean?

Answer 1

Its korean Seonbae (선배, 先輩) is used to address senior colleagues or mentor figures, e.g. students referring to or addressing more senior students in schools, junior athletes more senior ones in a sports club, or a mentor or more experienced or senior colleague in a business environment. As with English titles such as Doctor, Seonbae can be used either by itself or as a title. Hubae (후배, 後輩) is used to refer to juniors. However, the term is not normally addressed to them directly, and is mainly used in the third person. This is nearly identical in Japanese with Senpai/Kohai honorifics. The honorific suffix -님 (-nim) is affixed to many kinship terms to make them honorific. Thus, someone may address his own grandmother as 할머니 (halmeoni) but refer to someone else's grandmother as 할머님 (halmeonim).