Learning Korean adjectives often confuses beginners.
Why do adjectives change when they come before nouns?
This is where the essential Korean grammar pattern ‘-(으)ㄴ’ appears.
In this guide, you’ll learn how to use ‘-(으)ㄴ’ naturally with clear examples, sentence patterns, and common learner confusions.
Contents
1. What is ‘-(으)ㄴ’ in Korean Grammar?
1-1. Core Meaning of ‘-(으)ㄴ’
‘-(으)ㄴ’ is a Korean adjective modifier used to describe nouns. It allows adjectives to function like English adjectives before nouns.
Example:
예쁘다 → 예쁜 꽃 (a pretty flower)
1-2. English Equivalents
‘-(으)ㄴ’ often corresponds to:
• “a [adjective] noun”
• “the [adjective] noun”
• “a noun that is [adjective]”
Example:
예쁜 꽃 → a flower that is pretty
1-3. How Native Speakers Use It
Native speakers use ‘-(으)ㄴ’ constantly to describe nouns naturally in both speech and writing.
Examples:
예쁜 꽃 (pretty flower)
맛있는 음식 (delicious food)
This pattern is essential for forming basic descriptive noun phrases.
2. How to Form ‘-(으)ㄴ’ Adjective Modifiers
Using ‘-(으)ㄴ’ correctly depends on the adjective stem ending.
2-1. Stem Ending Rules
- Consonant-ending stems (받침 O) → attach -은 before the noun.
- Example: 작다 → 작은 집 (a small house)
- Vowel-ending stems (받침 X) → attach -ㄴ.
- Example: 크다 → 큰 집 (a big house)
- ㄹ-ending stems (ㄹ irregular) → remove ㄹ and add -ㄴ.
- Example: 길다 → 긴 머리 (long hair)
- Example: 멀다 → 먼 곳 (far place)
2-2. Examples Table
| Adjective (뜻) | ㄴ/은 Form | Example (English) |
|---|---|---|
| 작다 (to be small) | 작은 | 작은 집 (small house) |
| 크다 (to be big) | 큰 | 큰 집 (big house) |
| 길다 (to be long) | 긴 | 긴 머리 (long hair) |
| 넓다 (to be wide) | 넓은 | 넓은 방 (wide room) |
| 짧다 (to be short) | 짧은 | 짧은 치마 (short skirt) |
| 달다 (to be sweet) | 단 | 단 과일 (sweet fruit) |
| 밝다 (to be bright) | 밝은 | 밝은 빛 (bright light) |
| 많다 (to be many) | 많은 | 많은 사람 (many people) |
| 적다 (to be few/little) | 적은 | 적은 시간 (little time) |
| 예쁘다 (to be pretty) | 예쁜 | 예쁜 날씨 (pretty weather) |
| 바쁘다 (to be busy) | 바쁜 | 바쁜 하루 (busy day) |
| 친절하다 (to be kind) | 친절한 | 친절한 직원 (kind staff) |
2-3. Irregular Adjectives with ‘-(으)ㄴ’
Certain Korean adjectives have irregular stem changes when forming ‘-(으)ㄴ’ modifiers. Understanding these irregulars is essential to use adjectives naturally.
ㅂ Irregular Adjectives with ‘-(으)ㄴ’
- Most adjectives ending with ㅂ change ㅂ to 우 and then take -운.
Examples:
- 무겁다 (to be heavy) → 무거운 가방 (heavy bag)
- 어둡다 (to be dark) → 어두운 방 (dark room)
- 맵다 (to be spicy) → 매운 음식 (spicy food)
- 덥다 (to be hot) → 더운 날씨 (hot weather)
- 차갑다 (to be cold) → 차가운 물 (cold water)
- 귀엽다 (to be cute) → 귀여운 아이 (cute child)
Special Exceptions:
- 좁다 → 좁은 방 (narrow room)
- 넓다 → 넓은 방 (wide room)
ㅎ Irregular Adjectives with ‘-(으)ㄴ’
- Adjectives ending in ㅎ usually drop the ㅎ and take -ㄴ.
Examples:
- 하얗다 (to be white) → 하얀 눈 (white snow)
- 빨갛다 (to be red) → 빨간 사과 (red apple)
- 파랗다 (to be blue) → 파란 하늘 (blue sky)
- 노랗다 (to be yellow) → 노란 꽃 (yellow flower)
- 까맣다 (to be black) → 까만 머리 (black hair)
Regular Adjectives Ending in 하다 or Not ㅎ Irregular:
- 좋다 → 좋은 생각 (good idea)
2-4. Special Case – 있다 / 없다 Adjectives
Adjectives following 있다/없다 patterns use -는, not -(으)ㄴ.
Examples:
- 맛있다 (to be delicious) → 맛있는 음식 (delicious food)
- 맛없다 (to be not tasty) → 맛없는 점심 (unappetizing lunch)
- 재미있다 (to be interesting/fun) → 재미있는 책 (interesting book)
- 재미없다 (to be boring/uninteresting) → 재미없는 영화 (boring movie)
3. How to Use ‘-(으)ㄴ’ Naturally
‘-(으)ㄴ’ describes qualities, characteristics, and impressions.
3-1. Describing Observable Qualities
- Use -ㄴ/은 to describe what something looks like, feels like, or its physical state.
Examples:
- 예쁜 꽃을 샀어요. (I bought a pretty flower.)
- 큰 집에서 살고 싶어요. (I want to live in a big house.)
- 깨끗한 방을 유지하세요. (Please keep the room clean.)
- 긴 머리가 너무 아름다워요. (Long hair is so beautiful.)
- 좁은 길로 가면 위험할 수 있어요. (Going through a narrow street can be dangerous.)
3-2. Expressing Opinions or Subjective Impressions
- Use -ㄴ/은 to describe personal impressions, feelings, or qualities you attribute to something.
Examples:
- 재미있는 영화를 봤어요. (I watched an interesting movie.)
- 재미없는 책은 금방 덮게 돼요. (I quickly close boring books.)
- 무서운 이야기를 듣고 깜짝 놀랐어요. (I was startled after hearing a scary story.)
- 달콤한 디저트를 좋아해요. (I like sweet desserts.)
- 귀여운 강아지를 보고 미소 지었어요. (I smiled after seeing a cute puppy.)
3-3. Highlighting Extreme or Notable Qualities
- Use -ㄴ/은 to emphasize the extreme, unusual, or notable characteristic of a noun.
Examples:
- 높은 빌딩을 올라가서 경치를 봤어요. (I went up a tall building to see the view.)
- 밝은 빛 때문에 눈이 부셔요. (The bright light hurts my eyes.)
- 비싼 가방을 선물로 받았어요. (I received an expensive bag as a gift.)
- 차가운 물에 손을 넣었어요. (I put my hand in the cold water.)
- 새로운 레스토랑에서 맛있는 음식을 먹었어요. (I ate delicious food at a new restaurant.)
4. Practice Exercises for Using ‘-(으)ㄴ’
Test your understanding of ‘-(으)ㄴ’ and -는 adjective modifiers. Fill in the blanks with the correct form.orrect form.
| # | Sentence (Fill in the Blank) | English Translation |
|---|---|---|
| 1 | 저는 __ 를 좋아해요. | I took a walk in good weather. |
| 2 | 그 가게에 __ 가 많아요. | There are many interesting books in that store. |
| 3 | __ 을 먹지 마세요. | Don’t eat spicy food. |
| 4 | 방에 __ 가 있어요. | The room has big windows. |
| 5 | 그녀는 __ 를 입었어요. | She wore pretty clothes. |
| 6 | 우리는 __ 를 따라 걸었어요. | We walked along a long road. |
| 7 | 그는 __ 에 살아요. | He lives in a small house. |
| 8 | 오늘은 __ 예요. | Today is clear weather. |
| 9 | 아이가 __ 로 놀고 있어요. | The child is playing with a red ball. |
| 10 | 저는 __ 를 좋아해요. | I like interesting movies. |
Answer Key
- 좋은 날씨
- 재미있는 책
- 매운 음식
- 큰 창문
- 예쁜 옷
- 긴 길
- 작은 집
- 맑은 날씨
- 빨간 공
- 재미있는 영화
5. FAQ – ‘-(으)ㄴ’ in Korean Grammar
Q1: What does ‘-(으)ㄴ’ mean in Korean grammar?
‘-(으)ㄴ’ is an adjective modifier ending used to describe nouns.
It allows adjectives to function like “descriptive words” before nouns.
Example:
예쁜 꽃 (a pretty flower)
큰 집 (a big house)
Q2: When do I use -ㄴ vs -은?
The choice depends on whether the adjective stem ends with a vowel or a consonant.
- Vowel-ending stem → -ㄴ
Example: 예쁘다 → 예쁜 사람 (a pretty person) - Consonant-ending stem → -은
Example: 작다 → 작은 방 (a small room)
Q3: Why does 길다 become 긴 instead of 길은?
This is due to the ㄹ irregular rule.
For stems ending in ㄹ:
Drop ㄹ + add -ㄴ
Example:
길다 → 긴 머리 (long hair)
멀다 → 먼 곳 (far place)
Q4: Why do 맛있다 and 재미있다 use -는 instead of -ㄴ/은?
Adjectives derived from 있다/없다 use -는.
Example:
맛있다 → 맛있는 음식 (delicious food)
재미있다 → 재미있는 영화 (interesting movie)
This is a common learner confusion.
Q5: How is ‘-(으)ㄴ’ different from English adjectives?
In English, adjectives usually keep the same form:
pretty flower
big house
In Korean, adjectives must change form before a noun:
예쁜 꽃 (a pretty flower)
큰 집 (a big house)
6. Key Tips for Using ‘-(으)ㄴ’
- Adjectives → -(으)ㄴ / -은
- 있다 / 없다 → -는
- Final consonant O → -은
- Final consonant X → -ㄴ
- ㄹ final consonant → Drop ㄹ + -ㄴ
- ㅂ irregular → Changes to 우 / 오
- ㅎ irregular → Drop ㅎ
- 하다 → 한
Related Korean Grammar Patterns
Korean Verb Modifiers (Describing Nouns with Verbs)
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It helps learners understand natural Korean structures like “the person who came” or “the book I read.”
Korean Verb Modifier Conjugation Rules
This article provides a clearer breakdown of verb modifier patterns and formation rules.
It is especially helpful for learners who want more accurate sentence construction and fewer mistakes.
Korean ‘-던’ Explained (Describing Past Experiences)
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It helps learners understand a meaning distinction that does not exist in English.
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