Can You Use K-Drama Korean with Someone You Just Met?

Once you understand “뭐 해?” (“What are you doing?”), it is tempting to try it on a new dorm neighbor. But are you already on casual-speaking terms? Is this a private conversation? Matching the subtitle’s meaning does not reproduce the relationship conveyed by the original line.

All dialogues below are original learning examples, not quotations from a particular drama or rules for every Korean person.

1. Keep the relationship with the line

In this fictional scene, Mina and Sujin are close friends who have agreed to use casual speech.

Mina: 오늘 뭐 해?
Sujin: 도서관 가. 너도 갈래?

Meaning: “What are you doing today?” — “Going to the library. Want to come too?”

Now imagine classmates who have just met, rather than treating the first scene as a model for every introduction.

Mina: 오늘 뭐 해요?
Sujin: 도서관에 가요.
Mina: 저도 같이 가도 돼요?

Meaning: “What are you doing today?” — “I’m going to the library.” — “May I come along too?” Both scenes ask about today’s plans; the second also includes a polite request for permission. Save phrases with meaning / relationship / situation where I would use them. You do not need to copy the tone of an argument or teasing scene into a first meeting.

2. Prepare useful expressions for a first meeting

해요체, as in 가요 and 괜찮아요, is a speech style that shows politeness toward the listener. It is useful for starting everyday conversations. Formal introductions or presentations may use expressions such as 안녕하십니까 (“Hello”) and 감사합니다 (“Thank you”). An ending alone does not determine the politeness of an entire interaction: the request, voice and situation matter too. See the National Institute of Korean Language’s Basic Korean Dictionary entry for 해요체.

The right column is not produced simply by adding 요 to the left. 주실 수 있어요? asks whether someone could give you something; 말씀해 주실 수 있어요? also uses a respectful word for the other person’s speech. Initially, practice the whole expression together with its situation.

3. Does being the same age mean switching to casual speech?

Age is one consideration, alongside closeness, roles and what the two people have agreed. Same-age classmates can speak politely at a first meeting. Close friends may use a different style in an official meeting.

After talking a few times with a peer, you could ask:

우리 말 놓을까요?

“Shall we speak casually to each other?” Here 말을 놓다 means changing to casual speech. If the other person suggests it and you are not comfortable yet, say:

저는 아직 존댓말이 더 편해요. 존댓말로 해도 괜찮을까요?

“I’m still more comfortable using polite speech. Would it be okay if I keep using it?” This is not a universal invitation to request casual speech with a professor or staff member you have just met. Roles and relationships affect what is appropriate. Nor must you automatically copy someone who speaks casually to you first.

4. Before using 오빠, 언니 or 씨

Do not choose a drama-style form of address automatically from age alone. 오빠 and 언니 are used outside family relationships too, but you need not use them immediately without knowing someone’s preferences or your relationship. “Name + 씨” is not a formula that works identically in every relationship either.

Use known roles where appropriate: 교수님 for a professor and 선생님 for a teacher. With a new classmate, ask:

어떻게 불러 드리면 될까요?
민아라고 불러 주세요.

Meaning: “How should I address you?” — “Please call me Mina.” Giving a name does not automatically invite casual endings in every sentence. Consider address terms and sentence style separately. To ask a stranger for directions, you can avoid guessing a title: “실례합니다. 길 좀 여쭤봐도 될까요?” (“Excuse me. May I ask for directions?”). The relationship-dependent use of address terms is also discussed in the National Institute of Korean Language’s research on language policy for social communication.

5. Give a brief reason with a request or refusal

In this original group-project scene, compare:

“이거 줘.” → “발표 자료를 확인하고 싶어요. 파일을 보내 주실 수 있어요?”

“Give me this.” becomes “I’d like to check the presentation materials. Could you send me the file?” The item and purpose are clear even if the other student cannot send it immediately.

To decline an invitation, instead of only saying 싫어 (“I don’t want to”), you could explain your situation:

초대해 주셔서 감사해요. 그런데 오늘은 약속이 있어서 같이 가기 어려워요.

“Thank you for inviting me. But I have plans today, so I can’t come along.” This does not mean 싫어 is always wrong. Here, the goal is to acknowledge the invitation while declining. For an unwanted offer, you can also say a clear “아니요, 괜찮아요” (“No, thank you”). Being polite does not require agreeing to something you do not want.

6. If the wrong style slips out, try again

If you accidentally use a phrase you normally say to a friend, a short repair can help more than a long explanation:

아, 죄송해요. 다시 말할게요. 이것 좀 알려 주실 수 있어요?

“Oh, sorry. Let me try again. Could you explain this to me?” You can ask about the expression itself:

이렇게 말해도 괜찮아요?
더 공손하게 말하려면 어떻게 하면 돼요?

“Is it okay to say it like this?” / “How could I say it more politely?”

Short practice

Say these things to a classmate you just met. There is more than one possible answer.

1. You want to take an empty seat: “여기 앉아도 돼요?” — May I sit here?
2. You missed the explanation: “죄송해요. 다시 말씀해 주실 수 있어요?” — Sorry, could you say that again?
3. You decline lunch together: “같이 먹자고 해 주셔서 감사해요. 오늘은 약속이 있어요.” — Thank you for asking me to eat with you. I have plans today.

After learning a sentence, picture the person you will say it to. Review the expression’s meaning and relationship context together.

Common questions

Read next

Practice staff requests and answers in your first Korean restaurant visit, or prepare university messages with your first week studying in Korea. For understanding learned vocabulary in sentences, continue with when you know the words but miss the meaning.

TOPIK Note is a Korean learning service. Connect new words with sentences and situations, as well as dictionary meanings.