Korean Farewell Phrase: "안녕히 가세요"

"안녕히 가세요" (annyeonghi gaseyo) is a polite "goodbye" said by the person staying to the person leaving. Conversely, the person leaving says "안녕히 계세요" (annyeonghi gyeseyo) to the person staying — a distinctive feature of Korean is that the phrase changes depending on who is moving. Among close friends, just "안녕" (annyeong) is often enough.