【How-to】What does appa mean in korean

Sunbae(선배, 先輩) is a word that refers to people with more experience (at work, school, etc), and hoobae(후배, 後輩) refers to people with less experience. Generally, hoobaes have to use jondaetmal(존댓말, honorific language) to sunbaes, meaning they have to speak very politely and treat them with respect.