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B2 adjective #2,500 最常用 7分钟阅读

효율적

hyoyuljeok
开始练习 例句 笔记与提示 효율적 30秒了解
解析 효율적 in your Level:
At the A1 level, '효율적' might be too difficult. However, you can think of it as 'good use of time.' Imagine you have 10 minutes to clean your room. If you clean it very fast and it looks great, that is '효율적.' It's like being 'smart' with your work. You don't need to use this word yet, but remember it means 'not wasting time.'
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At the A2 level, you start to learn words for 'good' and 'bad.' '효율적' is a special kind of 'good.' It means 'efficient.' You might see it in ads for phones or cars. If a car uses only a little gas to go a long way, it is '효율적.' You can try to use it like this: '이 방법은 효율적이에요' (This method is efficient). It helps you sound more grown-up in your Korean.
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At the B1 level, you should distinguish between working hard and working smart. '효율적' is about working smart. You can use it to talk about your study habits or your job. For example, '시간을 효율적으로 사용하고 싶어요' (I want to use my time efficiently). You will see this word often in news articles or on social media when people talk about 'life hacks.'
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At the B2 level, you must master the nuance between '효율적' (efficient) and '효과적' (effective). This is a key distinction for professional Korean. You should be able to use the adverbial form '효율적으로' to describe complex actions and the noun form '효율성' to discuss abstract concepts. You are expected to use this word in essays about the environment, economy, or technology.
At the C1 level, '효율적' is a basic tool for analysis. You should use it to evaluate systems, policies, and theories. You might discuss 'Pareto efficiency' (파레토 효율성) or 'energy conversion efficiency.' You should also be aware of the social criticism of 'over-efficiency' in Korean society (the 'pali-pali' culture) and be able to debate its pros and cons using sophisticated vocabulary.
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At the C2 level, you use '효율적' with total precision across all registers. You understand its philosophical implications in utilitarianism or its technical applications in thermodynamics and computer science. You can use it metaphorically or ironically in literature. Your mastery includes all related Hanja compounds and the ability to explain the concept to others using complex Korean synonyms.
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开始练习 例句 笔记与提示

효율적 30秒了解

  • 효율적 means 'efficient' and describes achieving the best results with minimal waste of time, money, or energy in various contexts.
  • It is commonly used in business, technology, and study contexts to emphasize smart resource management over just working hard.
  • The word is formed from Hanja (效-率-的), literally meaning 'rate of effect,' highlighting the ratio between input and output.
  • Grammatically, it functions as an adjective (효율적인), an adverb (효율적으로), or a predicate (효율적이다) in both formal and informal settings.

The Korean word 효율적 (Hyo-yul-jeok) is a cornerstone of modern Korean discourse, particularly in professional, academic, and technological contexts. At its core, it describes the quality of being 'efficient'—the ability to achieve a desired result without wasting time, energy, or resources. Derived from Hanja (Chinese characters), the word breaks down into 효 (效 - effect/result), 율 (率 - rate/ratio), and 적 (的 - suffix forming an adjective). Literally, it refers to the 'rate of effect,' which perfectly mirrors the scientific and economic definition of efficiency: the ratio of output to input.

Hanja Breakdown
效 (효): Result or efficacy. It implies that an action has a tangible outcome.
Structural Role
The suffix '-적' transforms the noun '효율' (efficiency) into a determiner or adjective, allowing it to modify nouns directly or function as a predicate.

"우리는 더 효율적인 업무 방식을 찾아야 합니다." (We must find a more efficient way of working.)

— Business context example

In a society like South Korea, which underwent rapid economic development (the 'Miracle on the Han River'), the concept of efficiency is deeply embedded in the cultural psyche. It isn't just a technical term; it's a value. Being '효율적' means you are smart with your resources. It distinguishes a hard worker from a wise worker. While 'hard work' (열심히 하는 것) is respected, 'efficient work' (효율적으로 하는 것) is the modern ideal for success in competitive environments like Seoul's corporate world or the intensive education system.

To understand this word deeply, one must distinguish it from its close cousin, 효과적 (Effective). While effectiveness focuses on whether the goal was reached at all, efficiency focuses on the cost of reaching that goal. A bulldozer is effective at moving a pebble, but it is not efficient. A spoon might be efficient for the pebble, but ineffective for a mountain. This nuance is vital for B2 learners who wish to sound precise in their Korean expression.

에너지를 효율적으로 관리하는 것이 중요해요.

Economic Context
Refers to maximizing profit while minimizing overhead costs.
Personal Context
Refers to time management and 'life hacks' (꿀팁) that save effort.

이 기계는 연료 소모가 적어 매우 효율적입니다.

Using 효율적 correctly requires understanding its grammatical flexibility. As a '-적' word, it can function as a noun (determiner) or, by adding the copula '-이다', as an adjective/predicate. Most commonly, you will see it in three forms: 효율적인 (modifying a noun), 효율적으로 (as an adverb), and 효율적이다 (at the end of a sentence).

Adjective Form (효율적인 + Noun)
Used to describe a noun directly. Example: 효율적인 방법 (An efficient method).
Adverbial Form (효율적으로 + Verb)
Used to describe how an action is performed. Example: 효율적으로 공부하다 (To study efficiently).

공간을 효율적으로 활용하는 가구가 인기입니다.

When you want to compare efficiency, you use the markers '더' (more) or '가장' (most). Because efficiency is a measurable quality, these comparisons are very frequent. For example, in a tech review, you might hear: "이 칩셋은 이전 모델보다 20% 더 효율적입니다" (This chipset is 20% more efficient than the previous model). This usage highlights the objective, data-driven nature of the word.

시간을 효율적으로 쓰는 사람이 성공합니다.

In formal writing, such as reports or essays, '효율적' is often contrasted with '비효율적' (inefficient). A common sentence structure involves identifying a problem (inefficiency) and proposing a solution (efficiency). For instance: "현재의 비효율적인 시스템을 효율적인 시스템으로 개선해야 합니다." (We must improve the current inefficient system into an efficient one.)

Collocation with '배분' (Allocation)
자원의 효율적 배분 (Efficient allocation of resources) is a standard phrase in economics.

그는 업무를 매우 효율적으로 처리한다.

You will encounter 효율적 in a variety of high-stakes environments. In the Korean workplace, it is perhaps one of the most overused buzzwords. Managers constantly demand '효율적인 업무 처리' (efficient task handling) to reduce overtime. If you are watching a Korean drama set in a law firm or a tech company (like 'Start-Up'), listen for characters debating the efficiency of their strategies.

회의를 짧고 효율적으로 진행합시다.

In advertisements, particularly for electronics, cars, and home appliances, '효율적' is a key selling point. You'll see '에너지 효율 1등급' (Energy Efficiency Grade 1) stickers on refrigerators and washing machines in Korea. Advertisements for 'Gong-bu-beop' (study methods) also use this word to attract students who want to get high grades with less 'no-ga-da' (mindless hard labor).

Education
효율적인 암기법 (Efficient memorization techniques) is a popular search term.
Real Estate
공간의 효율적 구성 (Efficient layout of space) is used to sell small 'one-room' apartments.

이 차는 연비가 좋아서 경제적이고 효율적이에요.

Finally, in the self-improvement (자기계발) community in Korea, '효율적' is synonymous with 'smart living.' YouTubers who share '갓생' (God-life/productive life) routines often talk about how to organize their day '효율적으로.' It represents a shift from the older generation's emphasis on 'unconditional endurance' to the younger generation's emphasis on 'optimized performance.'

가장 효율적인 다이어트 방법을 알려주세요.

The most frequent mistake learners make is confusing 효율적 (Efficient) with 효과적 (Effective). While they share the first character '효' (effect), their meanings are distinct. Using '효율적' when you mean 'it worked' is a common B2-level error. If a medicine cured your cold, it was '효과적' (effective). If that medicine cured your cold using only a tiny dose and costing very little, it was '효율적' (efficient).

Mistake 1: Confusing with 'Effective'
Don't say '효율적인 약' (efficient medicine) unless you mean the manufacturing process was low-cost. Use '효과적인 약' for medicine that works.
Mistake 2: Overusing it for people
While you can say a person works efficiently (효율적으로 일하다), calling a person '효율적인 사람' can sound a bit cold or robotic, as if they are a machine. Use '유능한' (competent) or '일 잘하는' (good at work) for a more natural compliment.

Wrong: 이 방법은 목표 달성에 효율적이에요. (This method is efficient for reaching the goal.)
Better: 이 방법은 목표 달성에 효과적이에요. (This method is effective for reaching the goal.)

Another mistake is using '효율적' in casual, emotional contexts where it doesn't fit. For example, you wouldn't usually describe a '효율적인 데이트' (efficient date) unless you are joking about how quickly you ate and saw a movie to save time. In romantic or social contexts, '효율적' can imply a lack of sincerity or 'jeong' (affection).

비효율적인 지출을 줄여야 합니다. (We must reduce inefficient spending.)

Grammar Slip
Avoid saying '효율적하게'. The correct adverbial form is '효율적으로'.

To truly master '효율적', you should know its synonyms and related terms that vary slightly in nuance. The most direct synonym is 능률적 (Neung-ryul-jeok). While '효율적' is broad, '능률적' specifically focuses on the 'rate of work' or 'labor productivity.' It is often used in factory settings or when discussing how fast someone can finish a task.

능률적 (Productive/Efficient)
Focuses on the speed and volume of output relative to labor.
경제적 (Economical)
Focuses specifically on saving money or financial resources.
실용적 (Practical)
Focuses on usefulness and utility in real-life situations.

그는 능률적으로 일하는 법을 알고 있다. (He knows how to work productively.)

On the opposite side, we have 비효율적 (Inefficient). This is the most common antonym. If a process has too many unnecessary steps (red tape), it is '비효율적.' Another related concept is 낭비 (Waste). An inefficient process '낭비가 심하다' (is very wasteful). Understanding these opposites helps define the boundaries of '효율적.'

이 디자인은 매우 실용적이고 효율적입니다.

In academic or technical writing, you might also see 최적화 (Optimization). While '효율적' is a state, '최적화' is the process of making something as efficient as possible. If you '최적화' a system, the result is '효율적' performance. For a B2 learner, being able to use these words interchangeably or in the same paragraph shows a high level of vocabulary sophistication.

자원을 최적화하여 효율적인 결과를 냈다.

How Formal Is It?

难度评级

需要掌握的语法

-적 (Suffix for adjectives)

-적으로 (Adverbial suffix)

-성 (Suffix for abstract nouns)

-보다 (Comparison)

-기 위해서 (In order to)

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按水平分级的例句

1

이 방법은 효율적이에요.

This method is efficient.

Standard polite ending -에요.

2

효율적인 공부가 좋아요.

Efficient studying is good.

Adjective form modifying '공부'.

3

시간을 효율적으로 써요.

Use time efficiently.

Adverbial form with -으로.

4

이 차는 효율적입니다.

This car is efficient.

Formal polite ending -습니다.

5

더 효율적인 길을 찾아요.

Find a more efficient way.

'더' means 'more'.

6

돈을 효율적으로 사용해요.

Use money efficiently.

Object marker -을.

7

그는 효율적인 사람이에요.

He is an efficient person.

Noun + 이다.

8

효율적으로 일합시다.

Let's work efficiently.

Let's... form -읍시다.

1

에너지를 효율적으로 관리하세요.

Please manage energy efficiently.

Honorific imperative -세요.

2

이 냉장고는 아주 효율적이에요.

This refrigerator is very efficient.

Adverb '아주' (very).

3

효율적인 계획을 세웠어요.

I made an efficient plan.

Past tense -었/았어요.

4

가장 효율적인 방법을 알려주세요.

Please tell me the most efficient method.

'가장' means 'most'.

5

공간을 효율적으로 쓰고 싶어요.

I want to use the space efficiently.

-고 싶다 (want to).

6

이 앱은 효율적인 관리를 도와줘요.

This app helps with efficient management.

Helping verb -아/어 주다.

7

효율적으로 공부하면 시간이 남아요.

If you study efficiently, you'll have time left.

Conditional -(으)면.

8

비효율적인 습관을 버리세요.

Throw away inefficient habits.

Antonym '비효율적'.

1

업무를 효율적으로 분담하는 것이 중요합니다.

It is important to divide tasks efficiently.

-는 것이 중요하다 (It is important to...).

2

효율적인 의사소통은 오해를 줄입니다.

Efficient communication reduces misunderstandings.

Subject marker -은/는.

3

어떻게 하면 더 효율적으로 배울 수 있을까요?

How can I learn more efficiently?

-(으)ㄹ 수 있을까요? (Can I...?)

4

이 시스템은 이전보다 훨씬 효율적입니다.

This system is much more efficient than before.

-보다 훨씬 (much more than).

5

효율적인 시간 관리가 성공의 열쇠입니다.

Efficient time management is the key to success.

Genitive marker -의.

6

우리는 효율적인 해결책을 찾아야 합니다.

We must find an efficient solution.

-아야/어야 하다 (must).

7

인력을 효율적으로 배치해야 해요.

We need to deploy manpower efficiently.

Manpower '인력'.

8

효율적인 투자가 높은 수익을 가져옵니다.

Efficient investment brings high returns.

Verb '가져오다' (bring).

1

자원을 효율적으로 배분하는 것이 경제학의 핵심입니다.

Efficiently allocating resources is the core of economics.

Focus on '배분' (allocation).

2

이 기계는 에너지 효율이 매우 높습니다.

This machine has very high energy efficiency.

Noun '효율' used with '높다'.

3

비효율적인 프로세스를 개선하여 생산성을 높였습니다.

We improved inefficient processes to increase productivity.

Connective -아/어/여서 (reason).

4

효율적인 조직 문화를 만드는 것이 쉽지 않네요.

Creating an efficient organizational culture isn't easy.

-기 쉽지 않다 (not easy to).

5

데이터를 효율적으로 처리하는 알고리즘을 개발했습니다.

We developed an algorithm that processes data efficiently.

Relative clause -는.

6

정부는 예산을 효율적으로 집행하겠다고 발표했습니다.

The government announced it would execute the budget efficiently.

Indirect speech -고 발표하다.

7

효율적인 학습 전략이 성적 향상에 기여했습니다.

Efficient learning strategies contributed to the grade improvement.

Verb '기여하다' (contribute).

8

환경을 보호하면서도 효율적인 에너지를 사용해야 합니다.

We must use efficient energy while protecting the environment.

-면서도 (while also).

1

시장 경제에서 효율적인 자원 배분은 필수적입니다.

Efficient resource allocation is essential in a market economy.

Academic tone.

2

기술의 발전은 생산 공정을 더욱 효율적으로 만들었습니다.

Technological advancement has made production processes even more efficient.

Causative structure.

3

효율성만을 강조하다 보면 인간미를 잃을 수 있습니다.

If you only emphasize efficiency, you may lose your humanity.

-다 보면 (if one keeps doing...).

4

이 정책은 비용 대비 효율적이지 못하다는 비판을 받았습니다.

This policy was criticized for not being cost-effective.

Cost-benefit '비용 대비'.

5

물류 시스템의 효율적 운영이 기업의 경쟁력을 결정합니다.

The efficient operation of the logistics system determines a company's competitiveness.

Verb '결정하다' (determine).

6

그의 제안은 매우 효율적이지만 실현 가능성이 낮습니다.

His proposal is very efficient but has low feasibility.

Feasibility '실현 가능성'.

7

에너지 효율적 건축 설계가 기후 변화 대응의 핵심입니다.

Energy-efficient architectural design is key to responding to climate change.

Compound noun structure.

8

우리는 단기적인 성과보다 효율적인 시스템 구축에 집중해야 합니다.

We should focus on building an efficient system rather than short-term results.

-보다 (rather than).

1

파레토 효율성은 자원 배분의 이상적인 상태를 의미합니다.

Pareto efficiency refers to an ideal state of resource allocation.

Technical term.

2

극도의 효율적 추구는 때로 시스템의 유연성을 저해합니다.

The pursuit of extreme efficiency sometimes hinders system flexibility.

Verb '저해하다' (hinder).

3

언어의 효율적 사용은 화자의 의도를 명확히 전달하는 데 기여합니다.

The efficient use of language contributes to clearly conveying the speaker's intention.

Abstract concept.

4

열역학 제2법칙에 따라 모든 에너지는 100% 효율적일 수 없습니다.

According to the second law of thermodynamics, all energy cannot be 100% efficient.

Scientific context.

5

관료주의는 조직의 효율적 운영을 가로막는 장애물이 되곤 합니다.

Bureaucracy often becomes an obstacle to the efficient operation of an organization.

-곤 하다 (often does).

6

정보의 효율적 처리는 현대 정보 사회의 생존 전략입니다.

Efficient processing of information is a survival strategy in modern information society.

Survival strategy '생존 전략'.

7

그 소설가는 효율적인 문체로 인간의 내면을 날카롭게 묘사한다.

The novelist sharply depicts the human interior with an efficient writing style.

Literary criticism.

8

국가 예산의 효율적 집행은 납세자에 대한 최소한의 예의입니다.

Efficient execution of the national budget is the minimum courtesy to taxpayers.

Political/Ethical context.

反义词

비효율적 낭비적인

常见搭配

효율적 운영
효율적 관리
효율적 배분
효율적 사용
효율적 처리
효율적 방법
에너지 효율적
비용 효율적
시간 효율적
공간 효율적

常用短语

효율적인 업무 처리
효율적으로 일하다
효율성을 높이다
효율성이 떨어지다
효율적인 시간 관리
가장 효율적인 길
효율적인 학습법
에너지 효율 등급
효율적인 의사소통
효율적인 자원 활용

容易混淆的词

효율적 vs 효과적

Effectiveness (reaching the goal) vs Efficiency (saving resources).

효율적 vs 능률적

Productivity in labor vs General efficiency.

효율적 vs 경제적

Saving money vs Saving any resource.

习语与表达

"적은 비용으로 큰 효과를 내다"
"일석이조 (Kill two birds with one stone)"
"가성비가 좋다 (Good price-to-performance ratio)"
"손 안 대고 코 풀기 (Doing something very easily/efficiently)"
"꿩 먹고 알 먹기 (Eating the pheasant and its eggs)"
"마당 쓸고 돈 줍기 (Sweeping the yard and finding money)"
"누워서 떡 먹기 (As easy as pie/very efficient)"
"식은 죽 먹기 (Very easy)"
"하나를 알면 열을 안다 (Knowing ten things by learning one)"
"최소 비용 최대 효과 (Minimum cost, maximum effect)"

容易混淆

효율적 vs

효율적 vs

효율적 vs

효율적 vs

효율적 vs

句型

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如何使用

nuance

Efficiency implies a ratio. If you spend 10 and get 20, it's efficient.

frequency

Very high in professional settings.

常见错误
  • Using '효율적' for medicine that works (should be 효과적).
  • Saying '효율적하게' instead of '효율적으로'.
  • Confusing '효율' (efficiency) with '능률' (labor productivity) in scientific contexts.
  • Using it to describe a warm, emotional experience.
  • Misspelling '효율' as '효율'.

小贴士

Adverbial usage

Always use '효율적으로' when modifying a verb. Never say '효율적하게'.

Antonym prefix

The prefix '비-' (非) means 'not'. It's the easiest way to say 'inefficient'.

Business Buzzword

Use this word in interviews to show you value productivity.

Pali-Pali

Efficiency is the heart of Korea's fast-paced culture.

Essay Tip

Pair '효율적' with '생산성' (productivity) in academic writing.

Distinction

Listen for the '율' (yul) vs '과' (gwa) to avoid confusion.

Math Mindset

Think of it as Output/Input. Higher ratio = more 효율적.

Root Word

Learn '효율' first, then add '-적' and '-성'.

Vs Economical

Remember that '경제적' is mostly about money, while '효율적' is broader.

Softening

When talking to friends, '가성비' is often more natural than '효율적'.

记住它

词源

Sino-Korean

文化背景

Students look for '효율적인 공부법' to survive the competitive CSAT exam.

Korea's tech industry focuses heavily on 'energy efficiency' due to lack of natural resources.

Korean companies value '효율성' to reduce 'yageun' (overtime).

在生活中练习

真实语境

对话开场白

"시간을 어떻게 하면 효율적으로 쓸 수 있을까요?"

"한국에서 가장 효율적인 교통수단은 무엇인가요?"

"효율적인 공부를 위해 무엇을 하시나요?"

"이 앱이 정말 효율적이라고 생각하세요?"

"업무 효율성을 높이는 팁이 있나요?"

日记主题

오늘 하루를 얼마나 효율적으로 보냈는지 써 보세요.

자신만의 효율적인 공부법에 대해 설명해 보세요.

효율성보다 중요한 가치가 무엇이라고 생각하나요?

비효율적인 습관을 고치기 위한 계획을 세워 보세요.

우리 사회가 너무 효율성만 강조한다고 생각하시나요?

常见问题

10 个问题

효율적 is 'efficient' (doing things with minimal waste), while 효과적 is 'effective' (producing the desired result).

Yes, but it sounds a bit robotic. '유능한' (competent) is usually better for people.

It is used in both formal and casual settings, but more frequent in formal ones.

You add the prefix '비-' to get '비효율적'.

The noun is '효율' (efficiency) or '효율성' (the quality of being efficient).

Yes, '에너지 효율' is a very common phrase.

Yes, especially when talking about time management or shopping (getting a good deal).

效率的 (Effect-Rate-Target).

Generally positive, but can be negative if it implies cutting corners or being cold.

사용하다, 관리하다, 처리하다, 배분하다.

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自我测试 192 个问题

/ 192 correct

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