-(으)ㄴ/는 덕분에 Grammar in Korean: Meaning and How to Use It

What you'll learn

• Attach 덕분에 to nouns, verbs and adjectives.
• Choose the present modifier -는 or the past modifier -(으)ㄴ.
• Keep the result positive, and know what to say for a negative result.
• Tell -(으)ㄴ/는 덕분에 apart from 탓에 and 때문에.

Prerequisites: the lesson on -기 때문에, and the modifier endings -는 and -(으)ㄴ. Time: about 15 minutes.

Key facts

• 덕분에 means "thanks to." It shows gratitude to the cause.
• The result is always good or welcome.
• With a noun, 덕분에 follows after a space: 친구 덕분에. With a verb or adjective, the modifier comes first.
• The modifier shows time: -는 for something ongoing, -(으)ㄴ for something finished.
• Set replies such as 덕분에 잘 지내요 turn the pattern into a polite thank-you.

Listen to two model sentences.

The next section defines the pattern.

What Does -(으)ㄴ/는 덕분에 Grammar Mean?

덕분 is a noun that means "help, favour, credit." 덕분에 is that noun plus the particle 에, so the whole word means "owing to the favour of." When you say it, you tell the listener, "This good thing happened because of this person or this circumstance, and I am grateful."

That is why two conditions hold.

• The result is good. Passing an exam, having a nice picnic and getting better at Korean are all good results.
• The cause is something you credit. It is often a person, but it can also be the weather, luck or your own effort.

In the first example, the cause is a person. In the second, it is the weather. Both results are good. Notice that the RR of 합격했어요 is hapgyeokaesseoyo: in a predicate, RR writes the aspirated ㅋ that comes from ㄱ and ㅎ meeting. The next section shows how to build the form.

How Do You Form -(으)ㄴ/는 덕분에?

There are three cases: a noun, a verb and an adjective. In each case, write 덕분에 as a separate word, because 덕분 is a noun.

With a Noun

Add 덕분에 after a space. No particle is needed.

With a Verb

Use the modifier ending. The modifier is the ending that turns a verb into a describing word before a noun. Before 덕분에, it shows time.

• -는 (ongoing). Use it for help that is still going on or happens regularly.
• -(으)ㄴ (finished). Use it for help that has already happened.

For a verb with a final consonant, the forms are 먹는 (ongoing) and 먹은 (finished). The honorific 시 goes inside the modifier when the helper deserves respect: 도와주시는 덕분에 (ongoing) and 도와주신 덕분에 (finished). The ㄹ stems drop ㄹ before ㄴ, so 살다 becomes 사는 and 산.

Use the finished form when the result has already happened. 선생님이 도와주신 덕분에 합격했어요 uses 도와주신 because the help came before the pass. Use the ongoing form when the help continues: 매일 운동하는 덕분에 건강해요 ("Thanks to exercising every day, I am healthy").

With an Adjective

Use -(으)ㄴ. The ending is ㄴ after a vowel and 은 after a consonant.

ㅂ-irregular adjectives like 즐겁다 turn ㅂ into 우 before 은, so the form is 즐거운. The ㄹ adjective 길다 drops ㄹ before ㄴ, so the form is 긴.

For a past state, use -았/었던: 날씨가 좋았던 덕분에 ("Thanks to the weather having been good"). The present form 좋은 can still be used when the result is described as it was at that time, as in the model sentence.

The next section builds a full sentence.

Worked Example: Building 선생님이 도와주신 덕분에 합격했어요

Say that you passed an exam thanks to your teacher's help. Follow five steps.

1. Name the cause. "My teacher helped me" is 선생님이 도와주셨어요, with the honorific 시 for respect. The verb is 도와주다.
2. Turn the verb into a modifier. The help is finished, so use -(으)ㄴ. With the honorific 시, the form is 도와주신.
3. Add 덕분에. Write it as a separate word: 도와주신 덕분에.
4. State the good result. "I passed" is 합격했어요.
5. Join the parts. 선생님이 도와주신 덕분에 합격했어요.

You'll know it worked when the modifier ends in ㄴ (신), a space follows, 덕분에 comes next, and the result is a good event. If you wanted to credit a person with a noun alone, drop the first half: 선생님 덕분에 합격했어요.

The next section covers tense and sentence types.

Which Tenses and Sentence Types Work with -(으)ㄴ/는 덕분에?

Time is shown by the modifier before 덕분에, and the speech level goes on the last verb.

The result is usually a statement, because the pattern reports something that has happened. A question can ask for the source of the credit: 누구 덕분에 합격했어요? A wh-question puts the stress on the question word and often ends with a fall or a rise-fall, rather than a sharp rise. Commands and suggestions do not fit, because the pattern gives thanks for a fact.

The result is often in the past (합격했어요, 즐거웠어요), but it can be in the present when the effect continues: 친구가 있는 덕분에 외롭지 않아요 ("Thanks to having friends, I am not lonely").

The next section compares 덕분에 with 탓에 and 때문에.

How Is -(으)ㄴ/는 덕분에 Different from -(으)ㄴ/는 탓에?

All three give a cause. The difference is how the speaker feels about the cause and the result.

Compare these.

• 선생님 덕분에 합격했어요. "Thanks to my teacher, I passed." Gratitude.
• 늦게 일어난 탓에 지각했어요. "Because I got up late, I was late." The speaker blames the cause. 일어난 is the finished modifier of 일어나다.
• 비 때문에 길이 막혔어요. "The roads were jammed because of the rain." This is a plain statement of cause.

A cause that gives a bad result can sound sarcastic with 덕분에. 네 덕분에 다 망쳤어 means "Thanks a lot, you ruined everything." The speaker uses the word of thanks to complain. Learners should avoid this use until they can control their tone. For serious complaints, use 탓에 or 때문에.

For a full side-by-side with practice, see -(으)ㄴ/는 덕분에 vs -(으)ㄴ/는 탓에.

The next section covers set phrases and edge cases.

Variations and Edge Cases of -(으)ㄴ/는 덕분에

Set Replies

덕분에 can stand alone as a polite reply. When someone asks how you are, you can credit them for your good health or luck.

The last row uses 덕분 as a predicate: 이에요 follows the final consonant ㄴ, so 덕분이에요 is said [덕뿌니에요]. You can also say it with 덕분입니다 in the formal style. Use this phrase when someone praises you and you want to pass on the credit.

Shorter and More Formal Forms

덕에 is a shorter, more casual form: 네 덕에 살았어. 덕택에 is a close synonym and sounds a little more formal or old-fashioned. All three give credit.

Honorific Respect

When the helper is older or senior, put the honorific 시 in the modifier: 선생님께서 도와주신 덕분에. The particle 께서 is the honorific subject marker.

What You Cannot Do

You cannot drop the modifier from a verb: 도와주 덕분에 is wrong. You also cannot put the polite ending 요 before 덕분에: 도와줘요 덕분에 is wrong. The modifier -는 or -(으)ㄴ must come first.

The next section lists the mistakes that appear most often.

What Mistakes Do Learners Make with -(으)ㄴ/는 덕분에?

Learners make seven predictable mistakes. Each has a reason and a fix.

Learners often use it for bad results. Actually it expects a good result. Wrong (unless you mean sarcasm): 비가 온 덕분에 길이 막혔어요. Right: 비 때문에 길이 막혔어요. Fix: use 탓에 or 때문에 for problems.

Learners often join it to the bare stem. Actually a modifier is needed. Wrong: 도와주 덕분에. Right: 도와준 덕분에 or 도와주는 덕분에. Fix: add -는 or -(으)ㄴ.

Learners often attach it to the previous word. Actually 덕분 is a noun, so a space separates it. Wrong: 도와준덕분에 and 친구덕분에. Right: 도와준 덕분에 and 친구 덕분에. Fix: put a space before 덕분에.

Learners often use -는 for a finished event. Wrong: 어제 도와주는 덕분에 합격했어요. Right: 어제 도와준 덕분에 합격했어요. Fix: finished help takes -(으)ㄴ.

Learners often use -은 on a ㄹ stem. Wrong: 살은 덕분에. Right: 산 덕분에. Fix: drop ㄹ before ㄴ.

Learners often use it for a cause they are not grateful for. Actually the cause should be something you credit. Wrong: 시험이 어려운 덕분에 떨어졌어요. Right: 시험이 어려워서 떨어졌어요. Fix: if you are not thankful, choose -아/어서 or 때문에.

Learners often give a command after it. Wrong: 도와준 덕분에 하세요. Fix: end with a statement about the good result.

The next section gives you practice.

Practice and Answers

Do the four tasks, then compare with the key.

Task 1: choose the modifier. Write the form with 덕분에.

1. 도와주다 (the help is finished)
2. 운동하다 (ongoing)
3. 좋다
4. 살다 (ongoing)
5. 친구 (noun)

Task 2: fix the error. Each sentence has one mistake. Rewrite it correctly.

1. 도와준덕분에 합격했어요.
2. 도와주 덕분에 합격했어요.
3. 시험이 어려운 덕분에 떨어졌어요.

Task 3: translate. Write in Korean: "Thanks to my friend, my Korean got better." and "Thanks to you, I'm doing well."

Task 4: write your own. Write one sentence that credits a person for a good result, and one that credits the weather or a condition.

Answer key

1. (1) 도와준 덕분에 (2) 운동하는 덕분에 (3) 좋은 덕분에 (4) 사는 덕분에 (5) 친구 덕분에
2. (1) 도와준 덕분에 합격했어요. (2) 도와준 덕분에 합격했어요. (3) 시험이 어려워서 떨어졌어요.
3. 친구 덕분에 한국어 실력이 늘었어요. 덕분에 잘 지내요. Other correct versions exist, for example 친구가 도와준 덕분에 한국어가 좋아졌어요.
4. Sample answers: 부모님이 응원해 주신 덕분에 끝까지 했어요. 날씨가 좋은 덕분에 산책이 즐거웠어요. Any pair is correct if the cause is a modifier or a noun followed by a space and 덕분에, and the result is good.

If task 1 was correct, you have the modifier rule. If task 2 was hard, check for the space before 덕분에. The next section points you to what comes after this lesson.

What Should You Learn after -(으)ㄴ/는 덕분에 Grammar?

After -(으)ㄴ/는 덕분에, learn -(으)ㄴ/는 탓에, which is the blame partner. Then review -기 때문에, the neutral way to state a cause. To compare the two directly, read -(으)ㄴ/는 덕분에 vs -(으)ㄴ/는 탓에.

For a wider view, the parent page Cause and Reason lists every pattern in this group. -(으)ㄴ/는 덕분에 sits at level B1 on the Intermediate Grammar list. For tense questions, see past tense -았/었-.

This lesson covers -(으)ㄴ/는 덕분에 in the polite, casual and formal styles. It does not cover every written variation. About this page. Last updated 2026-10-09. Revised Romanization follows the national rules and is shown only as a learning aid.

Frequently Asked Questions

What Does -(으)ㄴ/는 덕분에 Mean?

-(으)ㄴ/는 덕분에 means "thanks to" or "owing to". It names a cause that led to a good result and shows that the speaker is grateful. 선생님이 도와주신 덕분에 합격했어요 means "Thanks to my teacher's help, I passed." The result is always something good or welcome.

How Do I Attach -(으)ㄴ/는 덕분에 to a Verb or Adjective?

Put a modifier ending before 덕분에. For a verb, use -는 for something ongoing (도와주는 덕분에) or -(으)ㄴ for something finished (도와준 덕분에). For an adjective, use -(으)ㄴ (좋은 덕분에). With a noun, add 덕분에 directly after a space: 친구 덕분에. ㄹ stems drop ㄹ: 사는 덕분에.

Can -(으)ㄴ/는 덕분에 Be Used in the past Tense?

Yes. The past is shown by the modifier -(으)ㄴ for a finished action: 도와준 덕분에, 공부한 덕분에. The main verb is usually in the past too: 합격했어요. Adjectives use -았/었던 for a past state: 날씨가 좋았던 덕분에. The present form -는 describes help that is still going on.

Is -(으)ㄴ/는 덕분에 Used in Speech or Only in Writing?

Both. It is common in speech when you thank someone or credit them, and it also appears in speeches, essays and news. The shorter 덕에 is more casual. A close synonym, 덕택에, sounds a little more formal. As a short reply, 덕분에 잘 지내요 is a polite way to say that you are doing well.

What Is the Difference between -(으)ㄴ/는 덕분에 and -(으)ㄴ/는 탓에?

덕분에 gives credit and expects a good result. 탓에 places blame and expects a bad result. 선생님 덕분에 합격했어요 means "Thanks to my teacher, I passed". 늦게 일어난 탓에 지각했어요 means "Because I got up late, I was late". Swapping them changes the feeling, and sometimes makes the sentence sarcastic.

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