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Mastering Korean Question Words: Who, What, Where, When, Why, How

February 6, 2026
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Introduction to Korean Question Words Question words are essential building blocks in any language. In Korean, mastering the six fundamental question words—who (누구), what (무엇), where (어디), when (언제), why (왜), and how (어떻게)—will dramatically improve your ability to ask questions and engage in conversations. Let's explore each of these important question words and learn how to use them naturally. 1. 누구 (nugu) - Who 누구 is used to ask about people or identify someone. It's one of the most frequently used question words in Korean. Examples: 누구예요? (nugu-yeyo?) - Who is it? 이 사람은 누구예요? (i saram-eun nugu-yeyo?) - Who is this person? 누구를 만났어요? (nugu-reul mannasseoyo?) - Who did you meet? 💡 Tip: When asking about possession, use '누구의' (nugu-ui) meaning 'whose.' For example: 이게 누구의 책이에요? (This is whose book?) 2. 무엇/뭐 (mueot/mwo) - What 무엇 is the formal way to say 'what,' while 뭐 is the casual, shortened version used in everyday conversation. Both are interchangeable, but 뭐 is much more common in spoken Korean. Examples: 뭐예요? (mwo-yeyo?) - What is it? 뭐 해요? (mwo haeyo?) - What are you doing? 이게 무엇입니까? (ige mueot-imnikka?) - What is this? (formal) 뭐 먹고 싶어요? (mwo meokgo sipeoyo?) - What do you want to eat? 💡 Tip: Use 뭐 in casual conversations with friends. Save 무엇 for formal writing or very polite situations. 3. 어디 (eodi) - Where 어디 is used to ask about locations or places. It's essential for navigation and making plans. Examples: 어디예요? (eodi-yeyo?) - Where is it? 어디에 가요? (eodie gayo?) - Where are you going? 어디서 왔어요? (eodiseo wasseoyo?) - Where did you come from? 화장실이 어디에 있어요? (hwajangsil-i eodie isseoyo?) - Where is the restroom? 💡 Tip: 어디에 (to where) indicates direction, while 어디서 (from where) indicates origin. Understanding these particles is key to asking precise location questions. 4. 언제 (eonje) - When 언제 is used to ask about time, dates, or schedules. It's crucial for planning and coordination. Examples: 언제예요? (eonje-yeyo?) - When is it? 언제 만날까요? (eonje mannalkkayo?) - When shall we meet? 언제 한국에 왔어요? (eonje hanguk-e wasseoyo?) - When did you come to Korea? 시험이 언제예요? (siheom-i eonje-yeyo?) - When is the exam? 💡 Tip: 언제 can be used for past, present, or future time. The verb tense in your sentence will clarify which time period you're referring to. 5. 왜 (wae) - Why 왜 is used to ask about reasons or causes. It's a simple but powerful question word. Examples: 왜요? (wae-yo?) - Why? 왜 안 왔어요? (wae an wasseoyo?) - Why didn't you come? 왜 그래요? (wae geuraeyo?) - Why are you like that? / What's wrong? 왜 한국어를 공부해요? (wae hangugeo-reul gongbuhaeyo?) - Why do you study Korean? 💡 Tip: 왜 그래요? is a very common expression that can mean 'What's wrong?' or 'What's the matter?' showing concern for someone. 6. 어떻게 (eotteoke) - How 어떻게 is used to ask about methods, manners, or ways of doing something. It can also be used to ask about someone's well-being. Examples: 어떻게 해요? (eotteoke haeyo?) - How do you do it? 어떻게 가요? (eotteoke gayo?) - How do you get there? 어떻게 지내세요? (eotteoke jinaeseyo?) - How are you? / How have you been? 이 단어를 어떻게 읽어요? (i daneo-reul eotteoke ilgeoyo?) - How do you read this word? 💡 Tip: 어떻게 지내세요? is a polite greeting similar to 'How are you?' in English. It's slightly more formal than 잘 지냈어요? (jal jinaesseoyo?) Practice Combining Question Words Now that you know all six question words, let's practice using them together in conversation scenarios: Scenario: Making Plans with a Friend 언제 만날까요? (When shall we meet?) 어디에서 만날까요? (Where shall we meet?) 누구를 더 초대할까요? (Who else should we invite?) 뭐 먹을까요? (What shall we eat?) 어떻게 갈까요? (How shall we get there?) Common Mistakes to Avoid Forgetting particles: Question words often need particles like 에, 에서, 를, or 이/가. Don't forget them! Using 무엇 too formally: In spoken Korean, 뭐 is much more natural. Save 무엇 for writing. Confusing 어디에 and 어디서: 어디에 (to where) vs 어디서 (from where/at where). The particle matters! Wrong word order: In Korean, question words usually come before the verb, not at the beginning like in English. Practice Exercises Try forming questions using these prompts: Ask where the library is Ask what someone wants to drink Ask when the class starts Ask how to get to Seoul Station Ask who your friend's Korean teacher is Answers: 도서관이 어디에 있어요? 뭐 마시고 싶어요? 수업이 언제 시작해요? 서울역에 어떻게 가요? 한국어 선생님이 누구예요? Conclusion Mastering these six question words—누구, 무엇/뭐, 어디, 언제, 왜, and 어떻게—is a significant milestone in your Korean learning journey. They form the foundation of asking questions and having meaningful conversations. Practice using them daily, pay attention to how native speakers use them in dramas or conversations, and don't be afraid to make mistakes. The more you use these question words, the more natural they'll become. Keep practicing, and soon you'll be asking questions in Korean with confidence! 화이팅! (Fighting!)
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