The 'Because, You See' Explainer (거든요)
거든요 to politely explain reasons or provide context that your listener doesn't already know.
Grammar Rule in 30 Seconds
Use -거든요 to provide a reason or background information when the listener doesn't know it yet.
- Use it to explain a reason: 'Why are you late?' 'I missed the bus, you see.' (버스를 놓쳤거든요.)
- Use it to provide background: 'I'm going to Korea.' 'Oh, I lived there before!' (전에 살았거든요.)
- It is strictly for conversational, spoken contexts; avoid in formal written reports.
Overview
Korean, like many languages, possesses nuanced ways to express causality and provide background information. Among these, the sentence-ending particle 거든요 (geodeunyo) stands out for its distinctive role in facilitating conversational flow, providing explanations, and sharing context. While often translated simply as "because," 거든요 carries a deeper implication: it signals that the speaker is offering information presumed to be new to the listener, effectively bridging an "information gap." It serves to justify, elaborate, or prepare the listener for further detail, often with a subtle nuance of "you see," "the thing is," or "it's because." Understanding 거든요 is crucial for moving beyond basic sentence structures and engaging in more natural, flowing conversations at the intermediate level.
Its appropriate use demonstrates not only grammatical competence but also an awareness of conversational pragmatics in Korean. This pattern is foundational for expressing reasons and background in a way that acknowledges and manages shared knowledge between interlocutors.
How This Grammar Works
거든요 operates on the principle of asymmetrical information. You employ 거든요 when you, as the speaker, possess a piece of information or a reason that you believe the listener does not yet know, but which is essential for them to understand the current situation or your statement. This makes 거든요 particularly effective in responses to implicit or explicit "why" questions (왜요? / waeyo?).거든요 frames the statement as an explanation, a clarification, or a prelude to more information, inviting the listener to understand the speaker's perspective.거든요 softens the explanation compared to direct declarative statements, conveying a sense of sharing information rather than simply dictating it. For example, if asked why you're eating alone, responding 친구는 일이 있거든요 (My friend has work, you see) is more natural and communicative than a blunt 친구는 일이 있습니다 (My friend has work). The 거든요 implicitly adds "...which is why I'm eating alone." It fills in missing context for the listener, making the interaction smoother and more cooperative.거든요 is a sentence-final ending, it often implies a continuation or a follow-up, even if unspoken. It's not typically used to introduce a completely new topic out of the blue, but rather to elaborate on an existing conversational thread. The intonation with 거든요 is significant; a gentle, slightly falling intonation maintains its explanatory and cooperative tone.거든요 is a prime example of such pragmatic competence.Formation Pattern
거든요 is relatively straightforward, attaching directly to verb stems, adjective stems, and noun forms, with specific conjugations for tense and politeness. Crucially, 거든요 itself is inherently polite, meaning it already carries the 요 (yo) marker, so adding another 요 (거든요요) is incorrect. For casual speech, the 요 is simply dropped to form 거든 (geodeun).
거든요 to the verb or adjective stem. No distinction is made based on whether the stem ends in a vowel or a consonant.
거든요 because it begins with a consonant. For example, 듣다 (to listen) becomes 듣거든요 (deudgeodeunyo), and 돕다 (to help) becomes 돕거든요 (dopgeodeunyo).
-았/었/였-), then attach 거든요.
-(으)ㄹ 거 (-(eu)l geo) form (contracted from -(으)ㄹ 것이다) and then attach 거든요.
거든요 (e.g., 저는 학생이거든요 - I'm a student, you see.)
거든 (e.g., 난 학생이거든 - I'm a student, you see.) - Used among close friends or when speaking to someone younger/lower in status.
거든요 is generally not used in very formal 합니다체 (hamnida-che) contexts (e.g., news broadcasts, formal presentations) where more direct or weighty causal expressions like -기 때문입니다 are preferred. Its conversational and explanatory nature makes it less suitable for highly formal written or spoken discourse.
When To Use It
거든요 is a versatile conversational tool employed in various situations to add depth and clarity to your communication. Its primary function revolves around the information gap, but its specific applications are diverse:- 1Providing a Reason or Explanation (Most Common Use)
거든요 introduces the reason the listener isn't aware of. It makes your answer feel more complete and explanatory.- A:
왜 한국어를 배워요?(Why are you learning Korean?) - B:
한국 드라마가 재미있거든요.(Because Korean dramas are interesting, you see.) - A:
피곤해 보여요.(You look tired.) - B:
어젯밤에 잠을 잘 못 잤거든요.(I didn't sleep well last night, you see.)
- 1Setting Background Context for a Story or Statement
거든요 to provide preliminary information before delving into the main point. This helps the listener understand the premise of what you're about to say.제가 어릴 때부터 그림 그리는 것을 좋아했거든요. 그래서 지금 미술을 전공하고 있어요.(You see, I've liked drawing since I was little. That's why I'm majoring in art now.)다음 주에 시험이 있거든요. 그래서 주말에 못 만날 것 같아요.(You see, I have an exam next week. So I probably can't meet on the weekend.)
- 1Softening a Request, Refusal, or Excuse
거든요 can make an excuse or refusal sound less blunt and more understanding. It implies a cooperative desire to explain rather than simply deny.죄송하지만 지금은 안 돼요. 다른 약속이 있거든요.(I'm sorry, but I can't right now. I have another appointment, you see.)오늘은 좀 힘들 것 같아요. 몸이 안 좋거든요.(I think today might be a bit difficult. My body isn't feeling well, you see.)
- 1Confirming or Correcting Information (with a mild explanatory tone)
거든요 can indicate that you're providing the correct information the listener might be missing.- A:
이 식당 오늘 문 닫았나요?(Is this restaurant closed today?) - B:
아니요, 저녁부터 열거든요.(No, it opens from the evening, you see.) - A:
민수 씨가 회사원이죠?(Min-su is an office worker, right?) - B:
아니요, 민수 씨는 대학생이거든요.(No, Min-su is a university student, you see.)
- 1Expressing a Mild Discovery or Realization
거든요 can convey a nuance of the speaker having just realized something or making an observation. This is less about explaining to others and more about articulating one's own internal thought process, often as a brief interjection.- (Looking at the clock)
벌써 12시거든요!(It's already 12 o'clock, you see! / Oh, it's already 12!) - (After trying a dish)
음, 생각보다 맵거든요.(Hmm, it's spicier than I thought, you see.)
거든요 is a tool for managing information flow in a conversation. It's an invitation to the listener to engage with your reason or context, making dialogues more interactive and personable. Mastering its use means not just knowing the grammar, but also understanding the social dynamics of communication.Common Mistakes
거든요 is vital for natural Korean conversation, learners frequently misuse it, leading to misunderstandings or unnatural-sounding speech. Awareness of these common pitfalls is key to using the pattern effectively.- 1Using it for Shared Knowledge (
잖아요vs.거든요)
거든요 when the information is already known to both the speaker and listener. 거든요 implies the listener doesn't know, whereas 잖아요 (janayo) is used to remind or confirm something both parties already know or should know.- Incorrect: (It's raining, both are wet)
비가 오거든요!(It's raining, you see! – Sounds redundant or like you're stating the obvious.) - Correct:
비 오잖아요!(It's raining, as you know! / It's raining, come on!) - Context for
거든요: (You call a friend who is indoors and doesn't know)밖에 비가 많이 오거든요. 우산 가져가세요.(It's raining a lot outside, you see. Take an umbrella.)
- 1Inappropriate Intonation
거든요 from a helpful explanation into an exasperated "Because I told you so!" or a patronizing "Don't you get it?"- Misconception: Believing
거든요always conveys a neutral "because." - Reality: The nuance is heavily influenced by delivery. A gentle, trailing intonation is generally safer and more appropriate for its intended explanatory role. Practice listening to native speakers and imitating their tone.
- 1Overuse
거든요 can make your speech sound repetitive and unnatural. Not every explanation requires 거든요. Sometimes a simple declarative sentence or other causal connectors like -(으)니까 or 아서/어서 are more fitting.- Problem: If every sentence providing a reason ends with
거든요, it loses its impact and can sound like you're constantly justifying yourself. - Solution: Vary your sentence endings. Use
거든요strategically when the information gap is genuinely present and you want to convey the specific nuance of providing background.
- 1Using it with Superiors or in Highly Formal Contexts
거든요 is polite (해요체), its conversational and slightly explanatory nature can be perceived as too casual or even as making excuses when speaking to someone of significantly higher status (e.g., a boss, a professor, or an elder with whom you're not close). In formal reports or very serious discussions, more formal causal expressions (-기 때문입니다, -(으)로 인해) are preferred.- Guidance: Exercise caution. With colleagues or peers, it's generally fine. With direct superiors, opt for more formal and direct explanations unless you have a very close working relationship.
- 1Incorrect Noun Conjugation
이 before 거든요 when a noun ends in a consonant (e.g., 학생이거든요 vs. 학생거든요). This is a basic error that can detract from fluency.- Rule Reminder: Noun ending in consonant +
이거든요; Noun ending in vowel +거든요.
- 1Treating it as a Direct Replacement for "Because"
거든요 is not a direct, universally interchangeable equivalent for "because." It carries the specific nuance of providing new, explanatory background information. Other forms like -(으)니까 (e.g., 배고프니까 먹어요 - because I'm hungry, I eat) or 아서/어서 (e.g., 배고파서 먹어요 - because I'm hungry, I eat) simply state a cause-and-effect relationship without the information gap implication.- Distinction:
거든요often functions as a standalone explanatory sentence or clause, whereas-(으)니까and아서/어서always connect two clauses within a single sentence.
거든요 in Korean.Real Conversations
To truly grasp 거든요, observing its deployment in authentic communication across various registers is essential. 거든요 appears naturally in casual chats, text messages, and even certain professional interactions among peers, adding a layer of conversational realism.
1. Casual Conversation Between Friends:
- Situation: Ji-Hye asks Min-jun why he's not coming to the movie.
- Ji-Hye: 오늘 영화 보러 갈래? (Wanna go see a movie today?)
- Min-jun: 아, 미안. 오늘은 안 될 것 같아. 약속이 있거든. (Ah, sorry. I don't think I can today. I have a prior engagement, you see.)
- Observation: Min-jun uses 있거든 (casual form) to gently decline, providing a reason Ji-Hye didn't know.
2. Texting/Messaging:
- Situation: A group chat where someone asks why the meeting was moved.
- Person A: 오늘 회의 시간 변경됐대. 왜지? (They said the meeting time changed today. Why?)
- Person B: 부장님이 갑자기 출장 가시거든요. 그래서 내일로 미뤄졌어요. (The team leader suddenly went on a business trip, you see. So it was postponed to tomorrow.)
- Observation: 가시거든요 provides the key piece of information that explains the change, which the others were unaware of. The polite 거든요 is appropriate for a group chat context.
3. Workplace Interaction (Peer-to-Peer):
- Situation: A colleague asks why a report isn't finished.
- Colleague 1: 김대리님, 보고서 다 됐어요? (Kim Assistant Manager, is the report finished?)
- Colleague 2: 아니요, 아직이요. 데이터가 아직 안 들어왔거든요. (No, not yet. The data hasn't come in yet, you see.)
- Observation: The use of 거든요 offers a legitimate, unknown reason without sounding defensive, maintaining a professional yet explanatory tone among peers.
4. Explaining a Preference or Opinion:
- Situation: Talking about food preferences.
- 저는 매운 음식을 잘 못 먹거든요. 그래서 순한 맛으로 시켰어요. (You see, I can't eat spicy food well. So I ordered the mild flavor.)
- Observation: 못 먹거든요 explains the personal preference, providing context for the subsequent action.
5. Cultural Insight: Conversational Softener
거든요 often functions as a conversational softener. Instead of abruptly stating a reason, it gently introduces the information, making the conversation feel less confrontational and more empathetic. It's a way of saying, "Let me share this with you so you understand," fostering a more collaborative dialogue. This reflects a cultural emphasis on maintaining harmony and context in communication.
Quick FAQ
거든요, summarizing key aspects of its usage:- Q: What is the primary function of
거든요?
It provides background information or a reason that the speaker believes the listener does not yet know, helping to explain a situation or statement.
- Q: Can I use
거든요with declarative sentences and questions?
Yes, exclusively with declarative sentences and questions. It is not used with imperative or propositive endings.
- Q: Is
거든요considered polite?
Yes, 거든요 itself is a polite form (해요체). Its casual counterpart is 거든.
- Q: How does
거든요differ from잖아요?
거든요 is for new information the listener doesn't know, while 잖아요 is for shared information both speaker and listener know or should know.
- Q: When should I use
-(으)니까or아서/어서instead of거든요?
-(으)니까 and 아서/어서 directly connect a cause to an effect within a single sentence. 거든요 often stands alone as an explanatory sentence or clause, emphasizing the newness of the reason.
- Q: Can
거든요be used in formal writing?
Generally no. Its conversational nature makes it unsuitable for formal reports, academic papers, or highly official documents. It's appropriate for informal writing like texts or emails to friends.
- Q: Does intonation matter with
거든요?
Absolutely. A soft, trailing intonation is key for its intended explanatory and cooperative tone. A sharp, rising intonation can sound rude or dismissive.
- Q: Can I use
거든요to start a conversation?
Not typically. It usually functions as a response or an elaboration within an ongoing conversational context, rarely as an opening statement.
Formation Table
| Type | Stem | Ending | Result |
|---|---|---|---|
|
Verb
|
가
|
거든요
|
가거든요
|
|
Verb
|
먹
|
거든요
|
먹거든요
|
|
Adjective
|
예쁘
|
거든요
|
예쁘거든요
|
|
Adjective
|
작
|
거든요
|
작거든요
|
|
Noun
|
학생
|
이거든요
|
학생이거든요
|
|
Noun
|
의사
|
거든요
|
의사거든요
|
Meanings
Provides a reason or background information that the listener is not aware of, often implying 'you see' or 'actually'.
Reasoning
Explaining the cause of a situation.
“비가 오거든요.”
“배가 아프거든요.”
Background
Providing context for a statement.
“저도 한국에 가거든요.”
“내일 시험이 있거든요.”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Present
|
Stem + 거든요
|
가거든요
|
|
Past
|
Stem + 었/았거든요
|
갔거든요
|
|
Negative
|
안 + Stem + 거든요
|
안 가거든요
|
|
Noun
|
Noun + (이)거든요
|
학생이거든요
|
|
Adjective
|
Stem + 거든요
|
예쁘거든요
|
|
Question
|
Stem + 거든요?
|
가거든요?
|
|
Past Negative
|
안 + Stem + 었/았거든요
|
안 먹었거든요
|
Formality Spectrum
바쁩니다. (Declining an invitation)
바빠요. (Declining an invitation)
바빠. (Declining an invitation)
바빠죽겠어. (Declining an invitation)
When to use 거든요
Reasoning
- 비가 오거든요 It's raining, you see
Background
- 전에 살았거든요 I lived there before
Examples by Level
맛있거든요.
It's delicious, you see.
바쁘거든요.
I'm busy, you see.
좋거든요.
It's good, you see.
비싸거든요.
It's expensive, you see.
내일 시험이 있거든요.
I have an exam tomorrow, you see.
어제 영화를 봤거든요.
I watched a movie yesterday, you see.
한국어를 공부하거든요.
I am studying Korean, you see.
그 사람은 제 친구거든요.
That person is my friend, you see.
왜 안 먹어요? 배가 고프지 않거든요.
Why aren't you eating? I'm not hungry, you see.
지하철이 빠르거든요. 그래서 타요.
The subway is fast, you see. That's why I take it.
그 가게는 문을 닫았거든요.
That store has closed, you see.
저도 그 사실을 몰랐거든요.
I didn't know that fact either, you see.
이 프로젝트는 중요하거든요. 잘 부탁드려요.
This project is important, you see. I ask for your help.
그녀는 이미 떠났거든요. 연락이 안 될 거예요.
She has already left, you see. You won't be able to reach her.
날씨가 좋아서 산책을 하거든요.
The weather is nice, so I'm going for a walk, you see.
그는 전문가거든요. 믿어도 돼요.
He is an expert, you see. You can trust him.
사실은 제가 그 일을 담당했거든요.
Actually, I was in charge of that work, you see.
그 제안은 현실성이 없거든요.
That proposal is not realistic, you see.
우리는 이미 합의를 봤거든요.
We have already reached an agreement, you see.
그것은 예외적인 상황이거든요.
That is an exceptional situation, you see.
그의 논리는 모순적이거든요.
His logic is contradictory, you see.
이 현상은 역사적 맥락이 있거든요.
This phenomenon has a historical context, you see.
그 결정은 불가피했거든요.
That decision was inevitable, you see.
그는 그 분야의 권위자거든요.
He is an authority in that field, you see.
Easily Confused
Both mean 'because'.
Both mean 'because'.
Both express cause.
Common Mistakes
비가 오다거든요
비가 오거든요
바쁘다거든요
바쁘거든요
먹거든요요
먹거든요
학생거든요
학생이거든요
갔다거든요
갔거든요
안 먹었거든요요
안 먹었거든요
비싸거든요요
비싸거든요
바쁘니까거든요
바쁘거든요
알거든요 (when listener knows)
알아요
비가 오거든요 (in a formal report)
비가 오기 때문에
비가 오거든요 (in a news article)
비가 내림으로 인해
그는 의사거든요 (in a formal bio)
그는 의사이다
그것은 사실이거든요 (in a thesis)
그것은 사실이다
Sentence Patterns
___거든요.
___이/가 ___거든요.
왜냐하면 ___거든요.
사실은 ___거든요.
Real World Usage
나 오늘 못 가. 일이 있거든요.
이 카페 진짜 예쁘거든요!
그건 제가 처리했거든요.
이거 매운 거거든요.
여기가 유명하거든요.
저는 경험이 많거든요.
Mind Your Tone
거든요 sound argumentative, like saying 'Because I said so!' Keep it flat or slightly falling to stay friendly.Texting Shortcut
거든 to explain things quickly to friends. It saves time and sounds very natural!Politeness Check
거든요 repeatedly with high-ranking officials or elders as it can sound like you're making too many excuses.Smart Tips
Add -거든요 to soften the refusal.
Use -거든요 to explain the context.
Use -거든요 to add background.
Use -거든요 to support your view.
Pronunciation
Linking
The 'ㄱ' in '거든요' is pronounced clearly.
Explanatory
바쁘거든요↗
Rising intonation at the end makes it sound like you are inviting the listener to understand.
Memorize It
Mnemonic
Think of '거든요' as 'Got-it-you'. You are giving the listener information they didn't 'got' before.
Visual Association
Imagine a lightbulb turning on above your friend's head as you explain something new. You are the one holding the lightbulb, saying '거든요' to hand it over.
Rhyme
When you want to explain, use 거든요 to make it plain.
Story
Min-su asked why I was late. I said, 'The bus was late, you see.' (버스가 늦었거든요.) He nodded, finally understanding the situation. I used 거든요 to bridge the gap in his knowledge.
Word Web
Challenge
Today, find three opportunities to explain a reason to someone using -거든요.
Cultural Notes
Koreans value 'nunchi' (reading the room). Using -거든요 shows you are being considerate by providing context.
The standard usage is very common in Seoul.
In Busan, they might use -거든예 instead.
Derived from the verb '거두다' (to gather/collect), implying the speaker is 'collecting' information for the listener.
Conversation Starters
왜 한국어를 공부해요?
오늘 왜 늦었어요?
이 식당은 왜 인기가 많아요?
왜 그 영화를 안 봤어요?
Journal Prompts
Common Mistakes
Test Yourself
비가 ___.
Choose the correct sentence.
Find and fix the mistake:
학생다거든요.
Arrange the words in the correct order:
All words placed
Click words above to build the sentence
I am eating, you see.
Answer starts with: 먹거든...
A: 왜 안 가요? B: ___
Use '친구' and '거든요'.
Which is conversational?
Score: /8
Practice Exercises
8 exercises비가 ___.
Choose the correct sentence.
Find and fix the mistake:
학생다거든요.
오늘 / 바쁘거든요 / 저는
I am eating, you see.
A: 왜 안 가요? B: ___
Use '친구' and '거든요'.
Which is conversational?
Score: /8
Practice Bank
10 exercises비싸 / 거든요 / 너무
Translate to Korean using the explanatory ending.
1. Why are you crying? 2. Why are you buying a coat? 3. Why are you late?
배고파___.
Choose the honorific form:
비밀거든요.
돈이 / 없 / 거든요
어제 ___.
Translate to Korean.
Select the natural choice:
Score: /10
FAQ (8)
No, it is too conversational. Use -기 때문에 or -므로.
Yes, it attaches to the stem of all verbs and adjectives.
Then do not use it. It will sound like you are being condescending.
No. -니까 is for objective reasons; -거든요 is for new information.
Yes, add -이거든요 for nouns ending in a consonant, -거든요 for vowels.
Yes, just add it to the past tense stem (e.g., 갔거든요).
It helps maintain social harmony by providing context.
Try explaining your daily actions to yourself in Korean using -거든요.
Scaffolded Practice
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3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
porque
Korean has different particles for different contexts.
parce que
Korean is more socially sensitive.
weil
Korean is strictly for speech.
kara
Korean '거든요' is more about sharing new info.
yinwei
Grammatical position.
li-anna
Korean is about the listener's knowledge.
Learning Path
Prerequisites
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