Imagine you’re walking through a bustling market in Seoul, and someone hands you an unfamiliar snack. You want to ask, “What is this?” — but the words just aren’t coming to you. Sound familiar? Knowing how to say “what” in Korean is one of the most essential building blocks of the language, and it’s more nuanced than you might expect.
Unlike English, where a single word covers almost every situation, Korean has several different words for “what,” each suited to a specific context. Whether you’re asking what someone does for work, what kind of movies they enjoy, or simply what’s going on, choosing the right word makes a big difference in how natural and respectful you sound.
Let’s break down the four main ways to say “what” in Korean, when to use each one, and how to start putting them into real sentences.
The Four Ways to Say “What” in Korean
Korean offers four key expressions that translate to “what” in English: 뭐 (mwo), 무엇 (mueot), 어떤 (eotteon), and 무슨 (museun). Each one carries a slightly different meaning or level of formality, so understanding the distinctions will help you communicate more naturally from day one.
뭐 (mwo) — The Everyday “What”
뭐 (mwo) is the most common and casual way to say “what” in Korean. Think of it as the word you’d reach for in everyday conversations with friends, classmates, or people around your own age. It’s short, punchy, and widely used in spoken Korean.
You’ll hear 뭐 used constantly in daily life — to ask what someone is doing, what they want to eat or drink, or what their plans are. It’s also the foundation of the expression 뭐라고 (mworago), which you can use when you didn’t catch what someone said — similar to saying “What did you say?” or “Pardon?” in English.
Example:
- 생일날에 뭐 할거야? (saengillare mwo halgeoya?) — What will you do on your birthday?
This word is derived from the more formal noun 무엇 (mueot), which we’ll look at next. Think of 뭐 as the relaxed, conversational shortcut that Koreans use in everyday speech.
무엇 (mueot) — The Formal “What”
무엇 (mueot) is the full, formal version of 뭐. While both words mean “what,” 무엇 is reserved for more polite or formal situations — such as speaking with someone older than you, addressing a stranger, or writing in a formal context.
In Korean culture, showing the appropriate level of respect through language is incredibly important. Using 무엇 instead of 뭐 in the right setting signals that you’re aware of social hierarchies and cultural etiquette, which Koreans will genuinely appreciate.
Example:
- 직업이 무엇입니까? (jigeobi mueosimnikka?) — What is your job?
You’re unlikely to hear 무엇 in casual conversation between friends, but it shows up frequently in formal interviews, official documents, and respectful exchanges with elders.
어떤 (eotteon) — “What Kind” or “Which”
어떤 (eotteon) shifts the meaning of “what” slightly. Rather than asking about something unknown, it asks about the type or nature of something — similar to saying “what kind of” or “which” in English. It’s always used before a noun and helps you get more specific information about something.
You might use 어떤 to ask what kind of music someone likes, what type of food they prefer, or which outfit they’re planning to wear. It adds a layer of specificity that 뭐 or 무엇 can’t provide on their own.
Example:
- 그 파티에 어떤 옷을 입을거야? (geu patie eotteon oseul ibeulgeoya?) — Which clothes will you wear to that party?
If you’re getting to know someone new in Korea — perhaps asking about their hobbies or preferences — 어떤 is the word that will make your questions sound thoughtful and natural.
무슨 (museun) — “What” for Clarification and Context
무슨 (museun) is another way to say “what kind of,” but it also has a broader range of uses. It can be used to ask for clarification about something someone said, to ask what type of work someone does, or to find out what’s happening in a given situation. Like 어떤, it appears before a noun.
The subtle difference between 어떤 and 무슨 can be tricky at first. A helpful way to think about it: 어떤 tends to focus on qualities or characteristics, while 무슨 is often used to identify or categorize something — like what type or category it belongs to.
Example:
- 무슨 일 있어요? (museun il isseoyo?) — What’s going on? / Is something wrong?
This phrase is especially useful in everyday social situations where you sense that something might be off or when you want to check in on someone.
How to Ask “What Is This?” in Korean
One of the most practical phrases for beginners is “What is this?” — essential for navigating new environments, reading menus, or exploring unfamiliar places. In Korean, there are two natural ways to ask this:
- 이게 뭐예요? (ige mwoyeyo?)
- 이거 뭐예요? (igeo mwoyeyo?)
Both phrases are polite and appropriate for most everyday situations. You can use either one when pointing at an object, a dish, a sign, or anything you don’t recognize. Koreans are generally very welcoming toward learners who try to communicate in their language, so don’t be shy about using these phrases!
How to Ask “What Is It?” in Korean
When someone tells you they have something to share — like news or a secret — you’ll naturally want to ask, “What is it?” In Korean, the go-to response is:
- 뭐예요? (mwoyeyo?) — What is it?
Here’s a natural example of how this plays out in conversation:
- A: 할 말이 있어요. (hal mari isseoyo) — I have something to say.
- B: 네, 뭐예요? (ne, mwoyeyo?) — Yes, what is it?
Short, simple, and incredibly useful — 뭐예요 is one of those phrases that will come up again and again as your Korean improves.
How to Write “What” in Korean (Hangeul)
If you’re working on your reading and writing skills, getting familiar with Hangeul — the Korean alphabet — is one of the best investments you can make as a learner. Here’s how the four “what” words look in Korean script:
- 뭐 — mwo
- 무엇 — mueot
- 어떤 — eotteon
- 무슨 — museun
One of the most encouraging facts about Korean is that Hangeul is considered one of the most logical and learnable writing systems in the world. King Sejong the Great designed it in the 15th century specifically to be accessible to ordinary people, and many learners find they can get a solid grasp of it in just a couple of hours.
Once you can read Hangeul, everything opens up — menus, street signs, song lyrics, subtitles — and the language starts to feel much more approachable. If you’ve been relying on romanized Korean (like the pronunciation guides in this article), making the jump to Hangeul is absolutely worth it.
Quick Reference: When to Use Each Word
Still not sure which “what” to reach for? Here’s a quick cheat sheet to help you choose:
- 뭐 (mwo) — Use in casual, everyday conversations. Great for asking what someone is doing, eating, or planning.
- 무엇 (mueot) — Use in formal or polite situations, especially with elders or strangers.
- 어떤 (eotteon) — Use when asking about the type, quality, or nature of something (“what kind of”).
- 무슨 (museun) — Use when seeking clarification or asking what category something belongs to.
Keep Building Your Question Words
Knowing how to say “what” in Korean is a fantastic starting point, but questions in any language go far beyond just one word. The more question words you add to your toolkit, the more freely you’ll be able to express curiosity, seek information, and connect with Korean speakers.
Consider expanding your knowledge to include words like “where” (어디 / eodi), “when” (언제 / eonje), “who” (누구 / nugu), “why” (왜 / wae), and “how” (어떻게 / eotteoke). Together, these form the backbone of natural Korean conversation.
The beauty of learning a language like Korean is that every small piece you pick up makes the whole picture a little clearer. So keep asking questions — in Korean and about Korean — and you’ll be surprised how quickly things start to click. 화이팅! (hwaiting!) — You’ve got this!
