As regular K-drama watchers, we've all heard the words "oppa" and "unnie." But what do they really mean, and more importantly, how do we use them? In this video, Billy from from GO! Billy helps you learn five common and useful words that every K-drama fan should know.

Now you can go around addressing your oppas without being afraid of misusing the word! Are there more Korean words you'd like to know about? Let us know in the comments below! And if you'd like to learn more Korean, head on over to Billy's channel over here. Don't forget to check out the DramaFever YouTube channel for more cool videos every week!