At the A1 level, '이질적이다' is a very difficult word. You don't need to use it yet. Instead, you should focus on the word '다르다' (da-reu-da), which means 'to be different'. If you see '이질적이다' in a book, just think of it as a very fancy way of saying 'different'. For example, if you see two different colors, you say '색깔이 달라요'. You wouldn't use '이질적이다' there. This word is usually for older students or people who read the news. Just remember that it starts with '이' (different) and '질' (quality). It's like comparing an apple to a rock—they are not just different colors; they are made of different things!
At the A2 level, you might start seeing '이질적이다' in simple reading passages about culture or different countries. You should understand that this word describes things that don't fit together because they are of a different kind. For instance, if you are learning about 'K-pop' and 'Classical music', they have '이질적인' sounds. They are very different styles. You don't need to use it in your speaking yet, but if you recognize it in a text, it means 'heterogeneous' or 'fundamentally different'. Try to notice the '-적' ending, which is very common in Korean adjectives that come from Chinese characters.
At the B1 level, you should be able to recognize '이질적이다' in news articles and formal discussions. You might use it when talking about social issues, like moving to a new country and feeling 'out of place'. A common phrase is '이질감을 느끼다', which means 'to feel a sense of difference' or 'to feel like an outsider'. This is a great word to use instead of '다르다' when you want to sound more professional or precise. For example, 'The two ideas are fundamentally different' can be '두 아이디어는 본질적으로 이질적이다'. It shows you understand that the difference is about the 'nature' of the things, not just their appearance.
At the B2 level, you are expected to use '이질적이다' correctly in your writing and formal speaking. You should understand the nuance that it often implies a lack of harmony or a distinct contrast. You can use it to describe chemical mixtures, social groups, or artistic styles. You should also know its antonym, '동질적이다' (homogeneous). At this level, you can start using it to describe complex situations, such as 'The integration of heterogeneous cultures' (이질적인 문화의 통합). You should also be comfortable with the noun form '이질성' (heterogeneity) and the phrase '이질감을 해소하다' (to resolve the sense of difference/alienation).
At the C1 level, '이질적이다' should be part of your active academic and professional vocabulary. You should be able to use it to discuss subtle distinctions in philosophy, sociology, and science. You can use it to critique literature, explaining how a certain '이질적인 요소' (heterogeneous element) functions within a narrative to create tension. You should also be aware of related terms like '이질 접합' in biology or '이질적 집단' in statistics. Your usage should reflect an understanding of the word's formal register, and you should be able to swap it with synonyms like '상이하다' or '판이하다' depending on the exact nuance you want to convey.
At the C2 level, you have a native-like grasp of '이질적이다'. You can use it metaphorically and in highly specialized contexts. You understand the historical and sociological weight the word carries in discussions about Korean national identity (단일민족) versus the growing '이질성' in a globalized era. You can use it in legal, medical, or high-level political discourse without hesitation. You are also capable of identifying when the word is used with a slight pejorative nuance (implying something doesn't belong) versus a purely descriptive scientific nuance. You can effortlessly use various grammatical forms like '이질화되다' (to become heterogeneous) or '이질성' in complex sentence structures.

이질적이다 em 30 segundos

  • Fundamental heterogeneity or being 'of a different nature'.
  • Commonly used for cultural, social, and scientific differences.
  • Formal register; more specific than the general word '다르다'.
  • Often implies a lack of harmony or an 'out of place' feeling.

The term 이질적이다 (I-jil-jeok-i-da) is a sophisticated Korean adjective derived from Hanja (Sino-Korean characters). It literally translates to 'having a different nature' or 'being heterogeneous.' In daily life, while it might sound somewhat academic or formal compared to the simple word '다르다' (to be different), it is indispensable for describing things that are not just different in appearance, but fundamentally different in their essence, composition, or origin. When you use this word, you are highlighting a mismatch or a contrast that feels distinct or even incompatible with the surrounding environment.

Etymology
The character 異 (I) means 'different,' and 質 (Jil) means 'quality' or 'substance.' Combined with the suffix 的 (Jeok), which turns a noun into an adjective, it describes the state of possessing a different quality.

Imagine walking into a traditional Korean village and seeing a ultra-modern glass skyscraper in the middle of the hanok houses. That building would be described as 이질적 (heterogeneous/out of place) because its nature and style do not harmonize with the historical surroundings. It is often used in sociology to discuss cultural differences, in science to describe mixtures of different substances, and in literature to describe characters who do not fit into their society.

도시의 한복판에 있는 낡은 기와집은 주변의 고층 빌딩들과 매우 이질적이다.

Translation: The old tile-roofed house in the middle of the city is very heterogeneous compared to the surrounding skyscrapers.
Social Context
In South Korean society, which has historically valued homogeneity (단일성), this word often appears in discussions about multiculturalism (다문화) and how 'different' or 'heterogeneous' elements are integrated into the social fabric.

Furthermore, in business or academic settings, people use this word to describe data points that don't fit the pattern, or team members with vastly different backgrounds. It carries a nuance of 'not belonging' or 'standing out' due to a fundamental difference in character. If you find yourself in a group where everyone thinks the same way except you, your perspective might be called an 이질적인 시각 (a heterogeneous/different perspective).

두 문화의 이질적인 요소들이 결합하여 새로운 예술이 탄생했다.

Using 이질적이다 correctly requires understanding its grammatical flexibility as a descriptive verb (adjective). It can function as a predicate at the end of a sentence or as a noun modifier when changed to 이질적인.

Predicate Form
Subject + 이/가 + 이질적이다. Example: '그들의 문화는 우리와 이질적이다.' (Their culture is heterogeneous compared to ours.)

When modifying a noun, you use the form 이질적인 [Noun]. This is very common in written Korean, especially in news reports, essays, and critiques. For example, 이질적인 분위기 (a different/foreign atmosphere) or 이질적인 집단 (a heterogeneous group).

그는 새로운 환경에서 이질적인 기분을 느꼈다.

Translation: He felt an alien/different feeling in the new environment.

You can also use adverbs like 매우 (very), 다소 (somewhat), or 전혀 (not at all) to modify the degree of heterogeneity. In scientific or technical contexts, you might see 이질적으로 (heterogeneously) as an adverb, though this is less common than the adjective form.

Comparative Usage
When comparing two things, use '...와/과 이질적이다'. Example: 'A는 B와 이질적이다.' (A is different in nature from B.)

이 액체들은 서로 이질적이라서 잘 섞이지 않는다.

In business presentations, you might describe a new market as having 이질적인 특성 (heterogeneous characteristics), implying that the strategies used elsewhere might not work there. This word signals that a deeper understanding of the differences is required, rather than just a surface-level comparison.

You are most likely to encounter 이질적이다 in formal and intellectual environments. While you might not hear it often in a casual chat between friends at a coffee shop (where they would just use '다르다' or '특이하다'), it is a staple of Korean media and academic discourse.

News & Media
News anchors use this word when reporting on international relations or social conflicts. For example, discussing the 'cultural heterogeneity' between North and South Korea (남북한의 문화적 이질성) is a very common topic.

In the world of art and film criticism, 이질적이다 is used to describe a unique style that doesn't fit into a specific genre. If a movie mixes horror with slapstick comedy in a way that feels jarring or intentional, a critic might say the two genres are 이질적 but create a unique effect.

이번 영화는 고전적인 배경에 현대적인 음악이 더해져 이질적인 매력을 보여줍니다.

Translation: This movie shows a heterogeneous charm by adding modern music to a classical background.

In university lectures—especially in sociology, psychology, and biology—this word is a technical term. A biology professor might talk about 이질 접합 (heterozygote) or 이질적인 세포 (heterogeneous cells). A sociology professor will discuss how to bridge the gap between 이질적인 집단 (heterogeneous groups) in a diverse society.

Literature
Authors use it to describe the internal state of a protagonist who feels like an outsider. The 'alien' feeling of being in a crowd but not part of it is often described as '이질감을 느끼다'.

그는 고향에 돌아왔지만, 변해버린 풍경에서 이질감을 감출 수 없었다.

One of the most common mistakes learners make is using 이질적이다 when they simply mean 'different' (다르다) in a basic way. If you say 'My apple is different from yours,' using 이질적이다 would sound incredibly strange and overly dramatic, as if the apples are of a different species or made of different matter.

Mistake 1: Overuse in Casual Contexts
Avoid: '이 피자는 어제 먹은 것과 이질적이에요.' (This pizza is heterogeneous compared to the one I had yesterday.) - Use '달라요' instead.

Another mistake is confusing 이질적이다 with 이상하다 (to be strange/weird). While something heterogeneous might feel strange, 이질적이다 is a neutral, descriptive term about nature and quality, whereas 이상하다 is a subjective judgment of weirdness.

그 사람의 행동은 이질적이다 (X) -> 그 사람의 행동은 이상하다 (O)

Note: Unless you mean his behavior is fundamentally of a different nature than human behavior, '이상하다' is better.

Learners also sometimes forget the opposite word. The antonym is 동질적이다 (to be homogeneous/of the same nature). Using these two as a pair helps clarify the meaning. If you only know 'different' and 'same,' you miss the nuance of 'nature/quality' that these Hanja-based words provide.

Mistake 2: Confusing with '외국적' (Foreign)
While foreign things are often '이질적', the word doesn't just mean from another country. A modern chair in an old room is '이질적' even if both are Korean.

그의 생각은 우리 팀의 분위기와 이질적이었다.

To truly master Korean, you need to know when to use 이질적이다 versus its synonyms. Each word has a slightly different flavor and register.

1. 다르다 (To be different)
The most general word. Use this for everything from 'different colors' to 'different opinions'. It lacks the 'nature/essence' nuance of 이질적이다.
2. 상이하다 (To be different/discrepant)
A very formal Hanja word (相異). It is used when comparing two things that should be the same but are different, like 'results are different from expectations' (결과가 예상과 상이하다).
3. 생경하다 (To be unfamiliar/strange)
Describes a feeling of something being new and unfamiliar, often used in literature. It’s more about the feeling of the observer than the nature of the object.

두 사람의 성격은 매우 상이했다.

Example of '상이하다' in a formal context.

If you want to emphasize that something is 'exotic' or 'uniquely different' in a positive way, use 이색적이다 (literally 'different color'). This is often used for travel, food, or festivals. 이질적이다 can be neutral or slightly negative (out of place), but 이색적이다 is almost always positive and interesting.

4. 판이하다 (To be entirely different)
Used when two things are 'worlds apart' or 'completely different'. It's more emphatic than 이질적이다.

그들의 문화와 우리의 문화는 판이하게 다르다.

Guia de pronúncia

UK /id͡ʑild͡ʑʌk̚.ida/
US /id͡ʒild͡ʒək̚.idɑ/
In Korean, stress is generally even, but a slight emphasis on the first syllable '이' (I) is common.
Rima com
본질적이다 (bon-jil-jeok-i-da) 물질적이다 (mul-jil-jeok-i-da) 품질적이다 (pum-jil-jeok-i-da) 체질적이다 (che-jil-jeok-i-da) 기질적이다 (gi-jil-jeok-i-da) 동질적이다 (dong-jil-jeok-i-da) 실질적이다 (sil-jil-jeok-i-da) 비질적이다 (bi-jil-jeok-i-da)
Erros comuns
  • Pronouncing '질' as 'zil' (there is no 'z' sound in Korean).
  • Over-pronouncing the final 'k' in '적' (it should be an unreleased stop).
  • Confusing '이' with '의' (the possessive marker).
  • Making the 'j' sound too heavy like the English 'j' in 'judge'.
  • Stressing the '-이다' suffix too much.

Exemplos por nível

1

이것은 저것과 이질적이에요.

This is different (in nature) from that.

Basic predicate form: A + 은/는 + B + 와/과 + 이질적이다.

2

그들은 이질적인 사람들이에요.

They are different (heterogeneous) people.

Noun modifying form: 이질적인 + Noun.

3

문화가 아주 이질적입니다.

The culture is very different/heterogeneous.

Formal polite ending: -습니다.

4

우리는 이질적인 팀이에요.

We are a heterogeneous team.

Adjective modifying the noun 'team'.

5

색깔이 이질적이에요.

The colors are heterogeneous (don't match).

Describes a mismatch in quality/nature.

6

이질적인 느낌이 들어요.

I feel a sense of difference/unfamiliarity.

Common expression: 이질적인 느낌.

7

두 물체는 이질적이다.

The two objects are heterogeneous.

Plain style used in definitions.

8

이질적인 소리가 나요.

A different (strange) sound is occurring.

Describes a sound that doesn't belong.

1

도시와 농촌은 이질적인 분위기를 가졌다.

Cities and villages have different atmospheres.

Past tense verb '가졌다' with '이질적인'.

2

이질적인 문화를 배우는 것은 재미있어요.

Learning about different cultures is fun.

Gerund phrase: 배우는 것.

3

그의 생각은 친구들과 이질적이었다.

His thoughts were different from his friends'.

Past tense: 이질적이었다.

4

이질적인 재료를 섞어서 요리해요.

I cook by mixing different (heterogeneous) ingredients.

Describes ingredients of different natures.

5

이질적인 환경에 적응하기 힘들어요.

It is hard to adapt to a different environment.

Adjective modifying 'environment'.

6

그 영화는 이질적인 매력이 있어요.

That movie has a unique/heterogeneous charm.

Positive nuance of '이질적'.

7

이질적인 요소들이 모여서 하나가 되었다.

Heterogeneous elements came together and became one.

Plural marker '들' used with the adjective.

8

전혀 이질적이지 않아요.

It is not heterogeneous at all.

Negative form: -지 않다.

1

새로운 직장에서 이질감을 느꼈다.

I felt a sense of alienation at the new workplace.

Noun form '이질감' used with '느끼다'.

2

두 나라는 문화적으로 매우 이질적이다.

The two countries are culturally very heterogeneous.

Adverbial '문화적으로' modifying the adjective.

3

이질적인 성격의 사람들이 모여 갈등이 생겼다.

Conflict arose because people of different personalities gathered.

Causal structure: -어서/아서.

4

그 건물은 주변 풍경과 너무 이질적이라 눈에 띈다.

The building stands out because it's too different from the surroundings.

Reasoning: 이질적이라(서).

5

이질적인 데이터를 분석하는 것은 어렵다.

Analyzing heterogeneous data is difficult.

Technical use in data analysis.

6

우리는 서로 이질적인 가치관을 가지고 있다.

We have different (heterogeneous) values.

Abstract noun '가치관' (values).

7

이질적인 종교들이 한 지역에 공존한다.

Heterogeneous religions coexist in one area.

Sociological context.

8

그의 말투는 이 지역 사람들과 이질적이다.

His way of speaking is different from the people in this area.

Comparing speech styles.

1

현대 미술은 종종 이질적인 매체들을 결합한다.

Modern art often combines heterogeneous media.

Formal verb '결합하다' (combine).

2

남북한의 언어 이질화 문제는 심각한 수준이다.

The issue of linguistic divergence between North and South Korea is serious.

Noun '이질화' (heterogenization/divergence).

3

이질적인 집단 간의 화합을 도모해야 한다.

We must promote harmony between heterogeneous groups.

Formal expression '화합을 도모하다'.

4

이 물질은 물과 이질적이라 섞이지 않고 층이 생긴다.

This substance is heterogeneous to water, so it doesn't mix and forms layers.

Scientific context.

5

사회적 이질성이 높아질수록 소통이 중요하다.

As social heterogeneity increases, communication becomes more important.

Structure: -(으)ㄹ수록 (the more... the more).

6

그의 제안은 회사의 기존 방침과 이질적이었다.

His proposal was inconsistent/heterogeneous with the company's existing policy.

Business context.

7

이질적인 정보를 통합하는 능력이 요구된다.

The ability to integrate heterogeneous information is required.

Passive voice '요구되다'.

8

이질적인 배경을 가진 인재들을 채용했다.

We hired talents with heterogeneous (diverse) backgrounds.

Positive professional context.

1

포스트모더니즘은 이질적인 양식의 혼재를 특징으로 한다.

Postmodernism is characterized by the coexistence of heterogeneous styles.

Academic terminology: 혼재 (coexistence/mixing).

2

유전적 이질성은 생태계의 회복력에 기여한다.

Genetic heterogeneity contributes to the resilience of ecosystems.

Scientific terminology: 유전적 이질성.

3

작가는 이질적인 시공간을 교차시켜 서사를 전개한다.

The author develops the narrative by intersecting heterogeneous time and space.

Literary criticism context.

4

다문화 사회에서 이질성에 대한 포용력이 필수적이다.

Tolerance for heterogeneity is essential in a multicultural society.

Sociopolitical context.

5

이질적인 데이터 세트를 병합할 때 오류가 발생할 수 있다.

Errors can occur when merging heterogeneous data sets.

Computing/Data science context.

6

그의 철학은 동양과 서양의 이질적인 사상을 융합하려 했다.

His philosophy attempted to fuse heterogeneous Eastern and Western thoughts.

Philosophical context.

7

시장 내부의 이질적인 수요를 파악하는 것이 급선무다.

Identifying the heterogeneous demands within the market is the first priority.

Economic/Business strategy context.

8

이질적인 법 체계 간의 충돌을 해결하기 위한 논의가 이어졌다.

Discussions followed to resolve conflicts between heterogeneous legal systems.

Legal/International relations context.

1

디아스포라 문학은 이질적인 문화 사이의 경계에 선 자들의 기록이다.

Diaspora literature is a record of those standing on the boundary between heterogeneous cultures.

Advanced literary theory.

2

이질적인 담론들이 충돌하며 새로운 사회적 합의를 형성한다.

Heterogeneous discourses collide to form a new social consensus.

High-level sociology.

3

번역은 원문의 이질성을 유지하면서도 도착어의 문맥에 맞게 조정하는 작업이다.

Translation is the task of adjusting to the target language's context while maintaining the heterogeneity of the original text.

Translation studies context.

4

글로벌 기업은 각국의 이질적인 규제 환경에 유연하게 대응해야 한다.

Global corporations must respond flexibly to the heterogeneous regulatory environments of each country.

Global business strategy.

5

이질적인 미적 가치들이 충돌하는 지점에서 창의성이 발현된다.

Creativity manifests at the point where heterogeneous aesthetic values collide.

Aesthetics and creativity theory.

6

사회의 급격한 이질화는 공동체 의식의 약화를 초래할 수 있다.

Rapid heterogenization of society can lead to the weakening of community spirit.

Sociological warning.

7

이질적인 역사적 경험이 민족 내부의 보이지 않는 벽을 만들었다.

Heterogeneous historical experiences have created invisible walls within the nation.

Historical analysis.

8

이질적인 데이터 소스들을 통합하여 빅데이터 플랫폼을 구축했다.

A big data platform was built by integrating heterogeneous data sources.

Advanced technology context.

Sinônimos

다르다 생소하다 이색적이다 상이하다 별개이다

Colocações comuns

이질적인 문화
이질감을 느끼다
이질적인 요소
이질적인 집단
이질적인 성격
이질적인 데이터
문화적 이질성
이질적인 분위기
이질적인 가치관
이질 접합

Frases Comuns

이질감이 들다

— To have a feeling of difference or alienation. Used when you feel like an outsider.

처음 한국에 왔을 때 이질감이 들었어요.

이질성을 극복하다

— To overcome heterogeneity. Used when trying to bridge gaps between different groups.

우리는 문화적 이질성을 극복해야 합니다.

이질적인 결합

— A combination of heterogeneous things. Often used in art or chemistry.

금속과 나무의 이질적인 결합이 돋보인다.

이질적인 배경

— Different backgrounds. Used when talking about people's history or education.

이질적인 배경을 가진 사람들이 모였다.

이질감을 해소하다

— To resolve the sense of alienation or difference.

이벤트를 통해 팀원 간의 이질감을 해소했다.

본질적으로 이질적이다

— To be fundamentally/essentially heterogeneous.

두 문제는 본질적으로 이질적이다.

이질적인 존재

— A heterogeneous existence. Often used for someone who stands out.

그는 이 사회에서 이질적인 존재였다.

이질적인 반응

— A different or unexpected reaction.

그의 말에 이질적인 반응이 나타났다.

이질적인 정보

— Heterogeneous information (from different sources/types).

이질적인 정보를 분석하여 결론을 내렸다.

이질적인 체계

— Heterogeneous systems (legal, social, etc.).

두 나라는 이질적인 경제 체계를 가지고 있다.

Expressões idiomáticas

"물과 기름 같다"

— Like water and oil. Used to describe two things/people that are fundamentally heterogeneous and don't mix.

그 두 사람은 물과 기름 같아서 절대 안 섞여.

Casual
"딴판이다"

— To be completely different. A more colloquial way to express extreme heterogeneity.

그의 말과 행동은 아주 딴판이다.

Casual
"천양지차"

— A difference as great as between heaven and earth.

두 제품의 품질은 천양지차다.

Formal/Idiomatic
"어불성설"

— Being illogical or inconsistent (often used when ideas are heterogeneous with logic).

그의 주장은 어불성설이다.

Formal
"동상이몽"

— Same bed, different dreams. Used when people in the same situation have heterogeneous goals.

우리는 같은 팀이지만 동상이몽을 꾸고 있다.

Idiomatic
"사뭇 다르다"

— To be quite/significantly different.

오늘 분위기는 평소와 사뭇 다르다.

Neutral
"하늘과 땅 차이"

— Difference between heaven and earth (similar to 천양지차).

실력 차이가 하늘과 땅 차이다.

Casual
"딴 세상 이야기"

— A story from another world. Used when something feels completely heterogeneous to one's reality.

그들의 부유한 삶은 나에게 딴 세상 이야기다.

Casual
"결이 다르다"

— To have a different 'grain' or 'texture'. A trendy modern way to say things are fundamentally different.

그 정치인은 기존 정치인들과 결이 다르다.

Neutral/Modern
"뿌리가 다르다"

— To have different roots. Used for fundamental origins.

두 문화는 뿌리가 다르다.

Neutral

Família de palavras

Substantivos

이질성 (Heterogeneity)
이질감 (Sense of heterogeneity/alienation)
이질화 (Heterogenization/Divergence)

Verbos

이질화되다 (To become heterogeneous)
이질화하다 (To make heterogeneous)

Adjetivos

이질적이다 (Heterogeneous)

Relacionado

동질적 (Homogeneous)
이질 접합 (Heterozygote)
이질 문화 (Different culture)
이질 집단 (Heterogeneous group)
이질 분자 (Heterogeneous element/Outsider)
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