The everyday Korean greetings, goodbyes, thanks and apologies, in polite forms you can use with anyone.
안녕하세요
Hello (polite, any time of day)
안녕
Hi / Bye (casual, with close friends)
안녕하십니까
Hello (very formal)
처음 뵙겠습니다
Nice to meet you (formal, at a first meeting)
만나서 반가워요
Nice to meet you
반갑습니다
Pleased to meet you (formal)
안녕히 가세요
Goodbye (to someone who is leaving)
안녕히 계세요
Goodbye (to someone who stays, when you leave)
잘 가요
Bye, take care (to a friend who is leaving)
또 만나요
See you again
내일 봐요
See you tomorrow
나중에 봐요
See you later
잘 지냈어요?
How have you been?
잘 지냈어요
I've been well
어떻게 지내세요?
How are you doing?
오랜만이에요
Long time no see
감사합니다
Thank you (formal)
고마워요
Thank you (polite, friendly)
천만에요
You're welcome
아니에요
Not at all (a common reply to thanks)
죄송합니다
I'm sorry (formal apology)
미안해요
I'm sorry (polite, friendly)
괜찮아요
It's okay / I'm fine
실례합니다
Excuse me (getting attention, entering a room)
저기요
Excuse me (calling a waiter or a stranger)
네
Yes
아니요
No
잘 자요
Good night (sleep well)
좋은 아침이에요
Good morning
식사하셨어요?
Have you eaten? (a friendly greeting)
좋은 하루 보내세요
Have a nice day
주말 잘 보내세요
Have a good weekend
수고하세요
Keep up the good work (said when leaving a shop or office)
수고하셨습니다
Thank you for your hard work
어서 오세요
Welcome (said by shop or restaurant staff)
조심히 가세요
Get home safely
연락할게요
I'll be in touch
다음에 또 봐요
See you next time
잘 먹겠습니다
Thank you for the meal (said before eating)
잘 먹었습니다
Thank you for the meal (said after eating)