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비효율적이다

A1 adjective #4,000 most common 10 min read

비효율적이다

bihyoyuljeogida Top 4,000

Practice it Examples Notes & Tips 비효율적이다 in 30 Seconds

Explanation 비효율적이다 in your Level:

At the A1 level, you can think of 비효율적이다 as a way to say something is 'not good' because it takes too much time or energy. Even though it looks like a long word, it is very useful for basic descriptions. At this stage, you should focus on the simple sentence structure: '[Subject]은/는 비효율적이에요.' For example, if you are studying Korean by just looking at words without writing them, and it takes a long time to remember, you can say '이 방법은 비효율적이에요' (This method is inefficient). You don't need to worry about complex grammar yet. Just remember that it is the opposite of '효율적이다' (efficient). Think of it as a tool to complain politely about a process that is too slow or wasteful. It's a great word to use when you want to sound a bit more serious than just saying '나빠요' (it's bad). You might use it when talking about a long line at a store or a confusing homework assignment. The key is to recognize the '비-' at the beginning, which usually means 'not' in Korean words derived from Chinese characters. This is your first step into 'Hanja' (Chinese character) based vocabulary, which makes up a large part of the Korean language. By learning this word, you are beginning to build the foundation for more advanced academic and professional Korean. Just practice the basic conjugation '비효율적이에요' and you will be able to express a lot of logical frustration in a simple way.

At the A2 level, you can start using 비효율적이다 to connect ideas using basic conjunctions like '-아/어서' (because) and '-지만' (but). You should also learn how to use the adjective form '비효율적인' to describe nouns. For example, '비효율적인 방법' (an inefficient method). At this stage, you can use the word to talk about your daily routines, study habits, or travel plans. If you go to the supermarket three times a day instead of once, you can say, '마트에 세 번 가는 것은 비효율적이에요' (Going to the mart three times is inefficient). You are moving beyond simple descriptions to explaining *why* something is a problem. You might also start noticing this word in simple news clips or blog posts about productivity. It is a very common word in the 'Pali-pali' (hurry-hurry) culture of Korea, so using it correctly will help you fit in with the local mindset of valuing time. Practice saying '비효율적이라서 싫어요' (I don't like it because it's inefficient). This level is all about expanding the contexts where you use the word, moving from simple objects to simple actions and habits. You should also be careful with the spelling, as the '효' and '율' sounds can be tricky for beginners. Repeat the word slowly: bi-hyo-yul-jeok-i-da.

At the B1 level, you should be able to use 비효율적이다 in professional and academic settings. This is where the word really shines. You can use it to critique work processes, discuss economic issues, or talk about environmental problems. For example, '에너지를 낭비하는 것은 매우 비효율적입니다' (Wasting energy is very inefficient). You should also be comfortable with various politeness levels, from the formal '비효율적입니다' used in presentations to the neutral '비효율적이다' used in writing. At this stage, you should also start comparing it with similar words like '비능률적이다' (ineffective/inefficient) and '비생산적이다' (unproductive). You can use more complex grammar patterns like '-기 때문에' (because) or '-(으)ㄴ 것 같다' (it seems like). For instance, '이 시스템은 너무 오래되어서 비효율적인 것 같아요' (I think this system is inefficient because it's too old). You are now using the word to express opinions and provide logical arguments. You will hear this word in office meetings, university lectures, and more detailed news reports. It becomes a tool for problem-solving. When you identify something as '비효율적,' the next step is usually to suggest a '효율적' (efficient) alternative. This shows that you are thinking critically in Korean.

At the B2 level, you can use 비효율적이다 to discuss abstract concepts and complex systems. You should be able to use it in written essays (using the '-다' plain form) and formal debates. You can talk about '비효율적인 자원 배분' (inefficient resource allocation) or '비효율적인 관료주의' (inefficient bureaucracy). Your vocabulary should expand to include related nouns like '비효율성' (inefficiency). For example, '이 계획의 가장 큰 문제는 비효율성입니다' (The biggest problem with this plan is the inefficiency). You should also be able to use the word with advanced grammar structures like '-음에도 불구하고' (despite) or '-ㄹ 정도로' (to the extent that). For instance, '비효율적임에도 불구하고 여전히 사용되고 있습니다' (Despite being inefficient, it is still being used). At this level, you understand the nuance between inefficiency in terms of time, cost, and effort. You can also use the word to describe psychological states, such as '비효율적인 감정 소모' (inefficient emotional drain/waste). You are expected to use this word with precision, distinguishing it clearly from '비효과적' (ineffective) in technical discussions. Your ability to use such Sino-Korean terms accurately is a hallmark of your transition into upper-intermediate proficiency.

At the C1 level, 비효율적이다 is used with high-level sophistication. you can analyze the systemic roots of inefficiency in society, economics, or philosophy. You might use it in a thesis or a high-level business report to describe '구조적 비효율성' (structural inefficiency). You can engage in deep discussions about the trade-offs between efficiency and other values like equity or stability. For example, '때로는 민주주의 절차가 비효율적으로 보일 수 있지만, 그것은 공정성을 위한 필수적인 과정입니다' (Sometimes democratic procedures may seem inefficient, but they are essential processes for fairness). You should be able to use the word in idiomatic or highly formal contexts, and understand its use in classical-style Korean writing. You can also use it to critique subtle aspects of language or communication, such as '비효율적인 수사법' (inefficient rhetoric). Your command of the word allows you to use it not just as a critique, but as a starting point for complex theoretical analysis. You understand how the concept of 'efficiency' has evolved in the Korean cultural context and can comment on it using this vocabulary. You can also handle complex passive or causative forms related to the concept, though the word itself remains an adjective.

At the C2 level, your use of 비효율적이다 is indistinguishable from that of an educated native speaker. You can use it to navigate the most formal and high-stakes environments, such as diplomatic negotiations, legal arguments, or top-tier academic journals. You understand the historical and philosophical baggage the word carries in the context of South Korea's rapid modernization. You can use it to discuss '파레토 비효율성' (Pareto inefficiency) in economics or '열역학적 비효율' (thermodynamic inefficiency) in physics with ease. You can also use it sarcastically or poetically if the context allows. For instance, you might describe a beautiful but convoluted piece of literature as '비효율적이지만 매혹적인 문체' (an inefficient but fascinating writing style). You are fully aware of the social implications of labeling something as '비효율적' and can use the word strategically to influence opinions or drive policy. Your mastery extends to all derived forms, related Hanja expressions, and the most obscure synonyms. You can explain the difference between '비효율' and '저효율' to other learners. At this level, the word is not just a vocabulary item; it is a concept that you can manipulate with total linguistic and cultural fluency.

Practice it Examples Notes & Tips

비효율적이다 in 30 Seconds

Means 'inefficient' or 'wasteful' regarding resources.
Used in both formal (business) and informal (daily life) contexts.
Commonly paired with '시간' (time) or '돈' (money).
Essential word for critiquing methods and seeking optimization.

The Korean word 비효율적이다 is a descriptive verb (adjective) that translates to 'to be inefficient.' To understand its profound weight in the Korean language, one must first look at the cultural backdrop of South Korea, a nation famous for its rapid economic development known as the 'Miracle on the Han River.' In this high-speed society, efficiency is not just a preference; it is a core value. The word is constructed from three Hanja components: 비 (非) meaning 'not' or 'non-', 효율 (效率) meaning 'efficiency,' and the suffix 적 (的) which transforms the noun into an attributive form, followed by the copula 이다 meaning 'to be.' When you describe something as 비효율적이다, you are pointing out that the input—whether it be time, money, effort, or resources—is not yielding the maximum possible output.

Core Concept: At its heart, this word describes a mismatch between effort and result. It is used when a process is clunky, a method is outdated, or a person's way of working involves unnecessary steps.

이 방식은 시간 낭비가 심해서 아주 비효율적이다. (This method is very inefficient because it wastes a lot of time.)

In a professional setting, calling a colleague's plan 비효율적이다 is a serious critique, suggesting that they are wasting company resources. However, it is also used in daily life, such as when discussing study habits or travel routes. If you take a bus that stops at every single station instead of the express train, a Korean friend might say, '그건 너무 비효율적이야' (That's too inefficient).

Etymological Nuance: The Hanja '효' (效) refers to effect or result, and '율' (率) refers to a rate or ratio. Thus, '효율' is the 'rate of result.' Adding '비' (非) negates this entire ratio, suggesting the ratio of work to result is broken.

종이 서류를 사용하는 것은 현대 사회에서 비효율적이다. (Using paper documents is inefficient in modern society.)

이 엔진은 연료 소비가 많아 매우 비효율적이다. (This engine is very inefficient due to high fuel consumption.)

회의를 세 시간이나 하는 것은 비효율적이다. (Having a meeting for three hours is inefficient.)

그의 학습 방법은 다소 비효율적이다. (His study method is somewhat inefficient.)

Register and Tone: While it sounds technical, it is used across all levels of formality. In a research paper, it describes systemic failure; in a kitchen, it describes a messy cook. It is a versatile tool for critique.

Understanding 비효율적이다 allows you to navigate the nuances of Korean productivity expectations. It is not just about being slow; it is about being 'unnecessarily' slow or wasteful. When someone says '비효율적이다,' they are usually implying that there is a better, smarter way to achieve the same goal. This word is essential for anyone working in a Korean office or studying in a Korean university, as the optimization of systems is a constant topic of conversation. It reflects a mindset that seeks to maximize utility and minimize waste in every aspect of life, from urban planning to personal time management.

Using 비효율적이다 correctly requires an understanding of how '-적' (suffix) and '이다' (to be) work together. In Korean, '-적' creates a noun that acts like an adjective, but it still requires the copula '이다' to function as a predicate in a sentence. For example, to say 'It is inefficient,' you say '비효율적이다.' To modify a noun directly, you change it to '비효율적인,' such as '비효율적인 방법' (an inefficient method). This distinction is crucial for learners.

Grammatical Structure: Noun + -적 + 이다. This pattern is extremely common for Sino-Korean words. You conjugate the '이다' part to change the politeness level or tense.

그 시스템은 상당히 비효율적이었습니다. (That system was quite inefficient.)

When you want to use it in the middle of a sentence to connect ideas, you might use '비효율적이라서' (because it is inefficient) or '비효율적이지만' (it is inefficient, but...). For instance, '이 방법은 비효율적이라서 바꾸기로 했습니다' (We decided to change this method because it is inefficient). Notice how the '이다' changes to '이라서.'

Common Conjugations: Informal Polite: 비효율적이에요. Formal Polite: 비효율적입니다. Past Tense: 비효율적이었어요. Future/Suppositional: 비효율적일 거예요.

너무 비효율적인 일에 시간을 쓰지 마세요. (Don't spend time on such inefficient work.)

이것은 경제적으로 매우 비효율적입니다. (This is economically very inefficient.)

이론적으로는 가능하지만 실제로는 비효율적일 수 있습니다. (It is theoretically possible but can be inefficient in practice.)

우리는 비효율적이라고 생각되는 모든 절차를 삭제했습니다. (We deleted all procedures considered inefficient.)

Sentence Patterns: [Subject] + [Adverb] + 비효율적이다. Example: '정부의 정책은 가끔 비효율적이다' (Government policies are sometimes inefficient). Adverbs like '매우' (very), '상당히' (considerably), and '극도로' (extremely) often accompany this word.

By mastering these patterns, you can express critique in a sophisticated way. Instead of just saying something is 'bad' (나쁘다), saying it is '비효율적이다' provides a specific reason—the waste of resources. This makes your Korean sound more precise and professional. Whether you are describing a software bug, a bad study habit, or a convoluted bureaucracy, this word will serve as a powerful tool in your linguistic arsenal.

You will encounter 비효율적이다 in a variety of real-world scenarios in Korea. Most commonly, it is found in professional and academic environments. In a corporate office in Seoul, you might hear a manager during a strategy meeting saying, '현재의 업무 프로세스는 너무 비효율적입니다. 개선이 필요해요' (The current work process is too inefficient. We need improvement). This word is a staple of business critiques because it sounds objective rather than personal.

News and Media: News anchors frequently use this word when reporting on government spending, public transportation issues, or economic trends. For example, '예산 집행이 비효율적이라는 지적이 나오고 있습니다' (Points are being raised that budget execution is inefficient).

TV 토론: '이 정책은 세금 낭비이며 매우 비효율적입니다.' (TV Debate: 'This policy is a waste of taxes and very inefficient.')

In the world of technology and software, developers use it to describe code that consumes too much memory or processing power. If an app takes too long to load, a user might leave a review saying, '앱이 너무 무겁고 비효율적이에요' (The app is too heavy and inefficient).

Education and Self-Help: You'll see this word constantly in Korean 'Gong-bu' (study) YouTube channels or blogs. Influencers will teach 'How to avoid inefficient study habits' (비효율적인 공부 습관을 피하는 법). In a competitive education system, efficiency in learning is a hot topic.

선생님: '단순 암기는 때때로 비효율적일 수 있습니다.' (Teacher: 'Simple memorization can sometimes be inefficient.')

블로그 제목: '나의 비효율적인 아침 루틴 고치기' (Blog Title: Fixing my inefficient morning routine.)

광고: '더 이상 비효율적인 다이어트는 그만하세요!' (Ad: Stop inefficient dieting now!)

뉴스: '서울의 교통 체증은 경제적으로 매우 비효율적입니다.' (News: Traffic congestion in Seoul is economically very inefficient.)

Daily Conversations: While less common in casual small talk than '힘들다' (it's hard), it is used when friends discuss life choices. '그렇게 멀리 돌아가는 건 비효율적이야' (Going that far around is inefficient). It adds a layer of logic to the advice.

In summary, '비효율적이다' is a word of critique and optimization. It is heard wherever systems are being analyzed, whether those systems are national economies, corporate workflows, or personal habits. Hearing it usually signals a desire for change and improvement.

One of the most frequent mistakes English speakers make when using 비효율적이다 is confusing it with other words related to 'bad' or 'difficult.' For example, a learner might say '비효율적이다' when they actually mean '불편하다' (inconvenient). While an inefficient system might be inconvenient, the words are not interchangeable. '비효율적이다' specifically targets the waste of resources relative to the outcome.

Mistake 1: Using it for 'Slow': If a person is just slow at walking, don't say they are '비효율적이다.' Use '느리다' (slow). Only use '비효율적이다' if their path choice or method makes the slowness unnecessary.

Wrong: 인터넷이 비효율적이에요. (The internet is inefficient - when you mean it's slow.)
Right: 인터넷이 느려요. (The internet is slow.)

Another common error is grammatical. Because it ends in '-적,' many learners forget to add '이다' to make it a verb. Saying just '이거 비효율적' is grammatically incomplete in formal settings, though it might pass in very casual texting.

Mistake 2: Confusing with '비효과적이다': '비효과적이다' means 'ineffective' (doesn't work). '비효율적이다' means 'inefficient' (works, but wastes resources). A medicine that doesn't cure a cold is '비효과적,' but a medicine that cures it but costs $10,000 is '비효율적.'

Wrong: 이 약은 비효율적이에요. (This medicine is inefficient - when you mean it doesn't work.)
Right: 이 약은 효과가 없어요. (This medicine is not effective.)

Mistake: 비효율적하다 (Incorrect conjugation).
Correct: 비효율적이다.

Mistake: 비효율적게 (Incorrect adverbial form).
Correct: 비효율적으로.

Mistake: 비효율적인다 (Incorrect plain form).
Correct: 비효율적이다.

Mistake 3: Overuse in Casual Contexts: Using this word too much when complaining to friends can make you sound overly cold or clinical. If a friend takes a long time to get ready, saying '너는 참 비효율적이다' sounds like a robotic performance review. Instead, use '왜 이렇게 오래 걸려?' (Why are you taking so long?).

By avoiding these pitfalls, you can ensure that your use of '비효율적이다' is both grammatically correct and contextually appropriate. Precision in vocabulary is what separates intermediate learners from advanced speakers.

To truly master 비효율적이다, it helps to understand its neighbors in the Korean vocabulary. There are several words that touch upon the idea of waste, lack of results, or poor performance.

비능률적이다 (Ineffective/Inefficient): This is the closest synonym. While '효율' (efficiency) focuses on the ratio of input to output, '능률' (efficiency/performance) often focuses more on the human or mechanical ability to perform a task quickly. In many cases, they are interchangeable, but '비효율적' is more common in modern business contexts.

Comparison:
- 비효율적이다: Focuses on the waste of resources (money, time).
- 비생산적이다: Focuses on the lack of production or results (unproductive).

낭비다 (It's a waste): This is a more direct, noun-based way to express inefficiency. '시간 낭비예요' (It's a waste of time) is often used instead of '비효율적이에요' in casual conversation.

Comparison:
- 비효율적이다: Logical critique of a system.
- 소용없다: Emotional or practical statement that something is useless/pointless.

헛수고 (Vain effort): This is a pure Korean (not Hanja) term. It refers to effort that yields no result at all. '비효율적' implies there was a result, but it cost too much. '헛수고' implies the result was zero.

Comparison:
- 비효율적이다: Formal, objective.
- 비경제적이다: Specifically focuses on financial inefficiency (uneconomical).

Comparison:
- 비효율적이다: Inefficient.
- 불합리하다: Irrational or unreasonable.

Understanding these alternatives allows you to choose the exact shade of meaning you need. While '비효율적이다' is a safe 'catch-all' for inefficiency, knowing when to use '비생산적' or '낭비' will make your Korean sound more natural and nuanced. As you progress, try to notice which of these words native speakers choose in different contexts—it's often the key to sounding like a native.

How Formal Is It?

Fun Fact

The character '비' (非) is the same one used in words like '비상구' (emergency exit - literally 'not ordinary exit') and '비정상' (abnormal).

Pronunciation Guide

UK bi-hyo-yul-jeok-i-da

US bi-hyo-yul-jʌk-i-da

The primary stress is on the first syllable of the root word '효' (hyo).

Rhymes With

효율적이다 (Efficient) 능률적이다 (Effective) 생산적이다 (Productive) 경제적이다 (Economic) 긍정적이다 (Positive) 부정적이다 (Negative) 합리적이다 (Rational) 열정적이다 (Passionate)

Common Errors

Pronouncing 'yul' as 'yool' with a long English 'oo' instead of the tighter Korean 'u'.
Missing the 'k' sound at the end of 'jeok' before 'i-da'.
Running 'hyo' and 'yul' together into one syllable.
Pronouncing 'bi' too softly like 'pi'.
Adding an extra 'h' sound where it doesn't belong.

Difficulty Rating

Reading 3/5

The word is long but follows a very logical Hanja structure that is easy to recognize once learned.

Writing 4/5

Spelling '효율' correctly can be difficult for beginners due to the vowels.

Speaking 4/5

The pronunciation of 'hyo-yul' requires good control of Korean vowels.

Listening 3/5

Easily recognized in business and news contexts due to its distinct sound.

What to Learn Next

Prerequisites

효율 (Efficiency) 이다 (To be) 비- (Prefix for 'not') 방법 (Method) 시간 (Time)

Learn Next

효과적이다 (Effective) 생산적이다 (Productive) 경제적이다 (Economic) 합리적이다 (Rational) 최적화 (Optimization)

Advanced

한계 효용 (Marginal utility) 기회 비용 (Opportunity cost) 가성비 (Price-performance ratio) 가심비 (Price-satisfaction ratio) 노동 집약적 (Labor-intensive)

Grammar to Know

-적이다 (Suffix for making adjectives)

과학적이다 (scientific), 문화적이다 (cultural).

비- (Prefix meaning 'non/un')

비정상 (abnormal), 비공개 (private).

-적으로 (Adverbial suffix)

비효율적으로 일하다 (to work inefficiently).

-적인 (Adjectival modifier suffix)

비효율적인 방법 (inefficient method).

이다 (Copula conjugation)

비효율적이었다 (was inefficient).

Examples by Level

이 방법은 비효율적이에요.

This method is inefficient.

Basic present tense polite form: -적이에요.

공부가 너무 비효율적이다.

Studying is so inefficient.

Plain form often used in journals or self-talk.

그것은 비효율적입니다.

That is inefficient.

Formal polite form: -적입니다.

이것은 비효율적인 일이에요.

This is inefficient work.

Attributive form: 비효율적인 + Noun.

시간이 비효율적으로 지나가요.

Time passes inefficiently.

Adverbial form: 비효율적으로.

왜 비효율적이에요?

Why is it inefficient?

Question form of the polite ending.

비효율적인 습관을 버려요.

Get rid of inefficient habits.

Object phrase with an imperative verb.

전혀 비효율적이지 않아요.

It is not inefficient at all.

Negation form: -지 않아요.

너무 비효율적이라서 안 할래요.

I don't want to do it because it's too inefficient.

-이라서 (because) added to the noun-적.

이 시스템은 비효율적이지만 싸요.

This system is inefficient but cheap.

-이지만 (but) added to the noun-적.

비효율적으로 일하지 마세요.

Don't work inefficiently.

Adverbial use with a negative command.

어제는 정말 비효율적이었어요.

Yesterday was really inefficient.

Past tense polite form: -적이었어요.

더 비효율적인 방법은 없어요.

There is no more inefficient method than this.

Comparative nuance with '더'.

이 계획은 좀 비효율적인 것 같아요.

I think this plan is a bit inefficient.

Softening the opinion with -(으)ㄴ 것 같다.

비효율적인 과정을 줄여야 해요.

We must reduce inefficient processes.

-어야 해요 (must/should) with a noun phrase.

돈을 비효율적으로 썼어요.

I spent money inefficiently.

Adverbial use describing an action.

회의가 너무 길어지면 비효율적입니다.

It is inefficient if the meeting gets too long.

Conditional -(으)면 with a formal predicate.

에너지 소비가 비효율적인 가전제품.

Home appliances with inefficient energy consumption.

Noun phrase with a complex modifier.

비효율적이라고 생각되면 말씀해 주세요.

If you think it's inefficient, please tell me.

Indirect quotation -적이라고 + 생각되다.

정부는 비효율적인 지출을 줄이겠다고 발표했습니다.

The government announced it would reduce inefficient spending.

Reported speech with -겠다고.

수동으로 데이터를 입력하는 것은 비효율적이에요.

Entering data manually is inefficient.

-는 것은 (gerund-like subject) + predicate.

비효율적인 구조를 개선하는 것이 시급합니다.

Improving the inefficient structure is urgent.

-는 것이 시급하다 (is urgent).

우리는 비효율적인 소통 방식을 바꿔야 합니다.

We need to change our inefficient way of communication.

Action verb with a descriptive noun phrase.

이 엔진은 연료 효율이 낮아 비효율적입니다.

This engine is inefficient due to low fuel efficiency.

Reasoning with -아/어 (clausal connective).

비효율적인 관료주의가 국가 발전을 저해합니다.

Inefficient bureaucracy hinders national development.

Academic subject-object-verb structure.

이것은 자원을 극도로 비효율적으로 사용하는 예입니다.

This is an example of using resources extremely inefficiently.

Adverbial phrase '극도로 비효율적으로'.

비효율적인 시스템을 유지하는 데 비용이 많이 듭니다.

It costs a lot to maintain an inefficient system.

-는 데 (in the process of/for) + cost expression.

그의 제안은 이론적으로는 훌륭하나 실제로는 비효율적이다.

His proposal is great in theory but inefficient in practice.

Contrastive -(으)나 (formal 'but').

기업들은 비효율적인 인력 배치를 피해야 합니다.

Companies must avoid inefficient personnel placement.

Professional terminology: 인력 배치.

비효율적임이 밝혀진 프로젝트는 중단되었습니다.

The project, which was found to be inefficient, was stopped.

Substantive form -임 (the fact that it is) + subject marker.

과도한 경쟁은 때때로 비효율적인 결과를 초래합니다.

Excessive competition sometimes leads to inefficient results.

Cause and effect verb: 초래하다.

비효율적인 업무 관행을 타파해야 합니다.

We must break down inefficient work practices.

Strong formal verb: 타파하다.

시장 경제에서 독점은 자원의 비효율적인 배분을 낳습니다.

Monopolies in a market economy lead to an inefficient allocation of resources.

Economic terminology and formal verb '낳다' (give birth to/lead to).

이러한 조치는 행정적 비효율성을 가중시킬 뿐입니다.

These measures only add to administrative inefficiency.

-ㄹ 뿐이다 (only/nothing but) + formal noun.

비효율적인 에너지 소비 구조를 근본적으로 개선해야 합니다.

The inefficient energy consumption structure must be fundamentally improved.

Adverb '근본적으로' (fundamentally).

그 정책은 비효율적일 뿐만 아니라 불공정하기까지 합니다.

The policy is not only inefficient but also unfair.

-ㄹ 뿐만 아니라 ... -기까지 하다 (not only... but even...).

비효율적인 의사결정 과정이 기업의 경쟁력을 약화시킵니다.

An inefficient decision-making process weakens a company's competitiveness.

Complex subject phrase and causative verb 약화시키다.

과거의 비효율적인 관습에서 탈피하려는 노력이 필요합니다.

Efforts to break away from past inefficient customs are necessary.

-려는 노력 (effort to...) + formal verb 탈피하다.

비효율적인 공간 활용은 도시 문제의 원인이 됩니다.

Inefficient use of space becomes a cause of urban problems.

Sociological context.

비효율적이라고 비판받던 제도가 전격 폐지되었습니다.

The system, which had been criticized as inefficient, was suddenly abolished.

Passive form 비판받다 and adverb 전격 (suddenly/completely).

국가적 차원의 자원 배분이 극도로 비효율적이라는 지적이 제기되었습니다.

Criticism has been raised that the allocation of resources at the national level is extremely inefficient.

-라는 지적이 제기되다 (criticism was raised that...).

비효율적인 관료주의의 폐해는 고스란히 국민의 몫이 됩니다.

The harmful effects of inefficient bureaucracy fall entirely on the shoulders of the citizens.

Idiomatic expression '고스란히 ~의 몫이 되다'.

정보의 비대칭성은 시장의 비효율적인 작동을 유발하는 주요 요인입니다.

Information asymmetry is a major factor that causes the inefficient operation of the market.

Advanced economic theory terminology.

비효율적인 생산 방식을 고수하는 것은 시대착오적인 발상입니다.

Adhering to inefficient production methods is an anachronistic idea.

Strong scholarly term: 시대착오적 (anachronistic).

인간의 뇌는 때때로 비효율적인 선택을 하도록 진화해 왔을지도 모릅니다.

The human brain may have evolved to make inefficient choices at times.

-았/었을지도 모른다 (might have...).

비효율적인 법적 절차가 정의 실현을 지연시키고 있습니다.

Inefficient legal procedures are delaying the realization of justice.

Legal/Philosophical context.

기술적 진보가 반드시 비효율적인 노동의 종말을 의미하지는 않습니다.

Technological progress does not necessarily mean the end of inefficient labor.

Partial negation: 반드시 ~하지는 않다.

비효율적인 구조를 타파하기 위한 혁신적인 패러다임의 전환이 요구됩니다.

An innovative paradigm shift is required to break down inefficient structures.

Highly formal academic phrasing.

Common Collocations

비효율적인 구조

비효율적인 지출

비효율적인 방식

비효율적인 관리

비효율적인 습관

극도로 비효율적이다

비효율적인 소통

비효율적인 에너지 사용

비효율적인 배치

시간상 비효율적이다

Common Phrases

비효율의 극치

— The height of inefficiency. Used to describe something incredibly wasteful.

이 행정 절차는 비효율의 극치다.

비효율적인 시스템

— An inefficient system. Very common in tech and business.

우리 회사는 비효율적인 시스템을 가지고 있다.

비효율적인 소모

— Inefficient consumption or waste. Often used for emotions or energy.

감정의 비효율적인 소모를 줄이세요.

비효율적인 대응

— An inefficient response. Used for crises or customer service.

정부의 비효율적인 대응이 비판받고 있다.

비효율적인 투자

— An inefficient investment. Used in finance and business.

그것은 비효율적인 투자로 판명되었습니다.

비효율적인 경로

— An inefficient route. Used in navigation or logic.

비효율적인 경로로 가면 시간이 더 걸려요.

비효율적인 인력

— Inefficient manpower. Used in HR and management.

비효율적인 인력 운용을 개선합시다.

비효율적인 학습

— Inefficient learning. Common in education.

비효율적인 학습법은 학생들을 지치게 합니다.

비효율적인 생산

— Inefficient production. Used in industry.

비효율적인 생산 라인을 폐쇄했습니다.

비효율적인 배분

— Inefficient distribution. Used in economics.

자원의 비효율적인 배분이 문제입니다.

Often Confused With

비효율적이다 vs 불편하다

Means 'inconvenient.' Something can be inefficient but comfortable, or convenient but inefficient.

비효율적이다 vs 비효과적이다

Means 'ineffective.' Inefficiency is about the process; ineffectiveness is about the result.

비효율적이다 vs 느리다

Means 'slow.' Slowness is a speed; inefficiency is a waste of resources (which could include time).

Idioms & Expressions

"밑 빠진 독에 물 붓기"

— Pouring water into a bottomless pot. Describes an extremely inefficient task.

이 프로젝트에 돈을 더 쓰는 건 밑 빠진 독에 물 붓기예요.

Casual/Idiomatic

"소 잃고 외양간 고치기"

— Fixing the stable after losing the cow. Describes inefficient, late action.

사고 후에 대책을 세우는 건 소 잃고 외양간 고치는 격으로 비효율적이다.

Idiomatic

"닭 잡는 데 소 잡는 칼 쓴다"

— Using a cow-butchering knife to kill a chicken. Using too many resources for a small task.

그 작은 일에 전문가 5명을 투입하는 건 닭 잡는 데 소 잡는 칼을 쓰는 것처럼 비효율적이다.

Idiomatic

"바람을 잡다"

— To catch the wind. Trying to do something impossible and inefficient.

그의 계획은 바람을 잡는 것처럼 비효율적이다.

Casual

"모래성 쌓기"

— Building a sandcastle. Doing something that won't last and is thus inefficient.

기초 없이 공부하는 건 모래성 쌓기처럼 비효율적이다.

Neutral

"연목구어 (緣木求魚)"

— Climbing a tree to catch a fish. A totally wrong and inefficient approach.

그런 식으로 성공을 바라는 건 연목구어와 같이 비효율적이다.

Literary/Formal

"시간 낭비"

— Waste of time. The most common way to say something is inefficient.

이 회의는 완전 시간 낭비예요.

Casual

"헛다리 짚다"

— To bark up the wrong tree. Taking an inefficient path based on a wrong guess.

우리는 한 달 동안 헛다리를 짚으며 비효율적으로 일했다.

Casual

"헛수고하다"

— To labor in vain. Doing work that leads nowhere.

결국 아무 결과도 없어서 헛수고만 했어요.

Neutral

"공염불 (空念佛)"

— Empty prayer. Making plans or promises that are never executed, thus inefficient.

실천 없는 계획은 공염불에 불과하며 비효율적이다.

Formal

Easily Confused

비효율적이다 vs 비능률적이다

They both mean inefficient.

'비효율적' is broader and more common in business. '비능률적' focuses more on the speed and performance of work.

기계가 비능률적으로 돌아간다 (The machine is performing inefficiently).

비효율적이다 vs 비생산적이다

Both describe poor work results.

'비생산적' specifically means no results are being produced. '비효율적' means results are produced but at too high a cost.

회의가 비생산적이었다 (The meeting produced no result).

비효율적이다 vs 비경제적이다

Both involve waste.

'비경제적' is strictly about money and financial value. '비효율적' can be about time, effort, or any resource.

큰 집은 난방비가 많이 들어 비경제적이다.

비효율적이다 vs 소용없다

Both imply something is not good to do.

'소용없다' is simpler and means 'useless.' '비효율적' is more technical and analytical.

지금 말해봐야 소용없어 (No use talking now).

비효율적이다 vs 부적절하다

Both describe a bad method.

'부적절하다' means inappropriate or wrong for the context. '비효율적' means wasteful.

장례식에서 농담하는 것은 부적절하다.

Sentence Patterns

N은/는 비효율적이에요.

이거 비효율적이에요.

비효율적인 N + V.

비효율적인 방법을 바꿔요.

V-는 것은 비효율적입니다.

기다리는 것은 비효율적입니다.

비효율적이라고 생각합니다.

그 계획은 비효율적이라고 생각합니다.

비효율적일 뿐만 아니라 ~.

비효율적일 뿐만 아니라 위험합니다.

비효율성을 극복하기 위해 ~.

비효율성을 극복하기 위해 개혁이 필요하다.

N(이)라서 비효율적이에요.

수동이라서 비효율적이에요.

너무 비효율적이다.

이 시스템은 너무 비효율적이다.

Word Family

Nouns

비효율 (Inefficiency)

비효율성 (Inefficiency - the quality of being inefficient)

효율 (Efficiency)

Verbs

비효율화하다 (To make inefficient - rare)

효율화하다 (To make efficient/optimize)

Adjectives

비효율적인 (Inefficient - noun modifying form)

효율적인 (Efficient)

비능률 (Ineffectiveness)

비생산 (Unproductivity)

낭비 (Waste)

비경제 (Uneconomical)

불합리 (Irrationality)

How to Use It

frequency

High in professional and academic settings; moderate in daily conversation.

Common Mistakes

Using '비효율적하다' → 비효율적이다
Words ending in '-적' use the copula '이다', not the verb '하다'.
Using it for 'slow' internet. → 인터넷이 느려요.
Inefficiency involves waste, not just low speed.
Confusing with '불편하다'. → 사용하기 불편해요.
Something can be efficient but hard to use (uncomfortable/inconvenient).
Forgetting the '-인' when modifying a noun. → 비효율적인 방법
You cannot say '비효율적 방법' without the modifier particle '인' in standard Korean.
Using it for 'ineffective' medicine. → 효과가 없어요.
If it doesn't work at all, it's 'ineffective' (비효과적), not 'inefficient'.

Tips

Adjective vs Noun

Remember that '비효율적' is technically a noun. To use it as an adjective, you must add '이다' (to be) or '-인' (to modify a noun). This is a common pattern for words ending in '-적'.

The 'Bi' Prefix

Learn other '비-' words to expand your vocabulary quickly. 비정상 (abnormal), 비공식 (unofficial), 비인간적 (inhumane). The '비' prefix is a powerful tool for understanding new Korean words.

Pronouncing 'Yul'

The 'u' in 'yul' (율) is a tight sound. Practice saying 'yoo' but keep your lips more tense. If you say it like English 'you-l', it might sound like '열' (yeol) to native speakers.

Office Etiquette

In a Korean office, use '비효율적입니다' to critique a process. It sounds more professional and less like a personal attack than saying someone is doing a bad job.

Essay Structure

In argumentative writing, start by identifying the '비효율성' (inefficiency) and then propose a '해결책' (solution). This is a standard structure for Korean academic writing.

News Keywords

When you hear '비효율적' on the news, it's often followed by words like '예산' (budget), '지출' (spending), or '행정' (administration). This helps you predict the topic.

Hanja Roots

Memorizing the Hanja characters (非效率的) will help you recognize this word and its relatives in Japanese and Chinese as well. It's a great 'three-for-one' study deal.

Pali-pali Culture

Understand that 'efficiency' in Korea often means 'speed.' If something is slow, it is almost always labeled as '비효율적이다'.

Synonym Choice

Use '비효율적' for systems and '비생산적' for results. Using the right word shows you are an advanced learner.

Practice with Opposites

Always study '비효율적이다' and '효율적이다' together. Learning antonyms helps create stronger neural pathways for memory.

Memorize It

Mnemonic

Think of a 'Bee' (비) that is too 'Hyo' (heavy) to fly 'Yul' (well). It's a very 'Inefficient' bee.

Visual Association

Imagine a person trying to cut a large tree with a small plastic butter knife. The contrast between the effort and the result is the essence of '비효율적이다'.

Word Web

Waste Time Money Process Slow Hanja Critique Work

Challenge

Try to find three things in your daily routine that are '비효율적이다' and write them down in Korean. For example: '아침에 침대에서 30분 동안 핸드폰을 보는 것은 비효율적이다.'

Word Origin

Derived from Sino-Korean (Hanja) roots. '비' (非) + '효율' (效率) + '적' (的) + '이다'.

Original meaning: Not having a high rate of effect/result.

Sino-Korean (Hanja-based)

Cultural Context

Be careful when using this to describe a person's personality; it can sound very cold and judgmental. It is better to use it for 'methods' or 'systems' rather than 'people'.

In English, 'inefficient' is a common professional term, but in Korean, it carries a slightly stronger tone of 'unnecessary waste' due to the cultural emphasis on speed.

Used frequently in the webtoon and drama 'Misaeng' to describe corporate bureaucracy. A common theme in Korean self-improvement books like 'The Power of Habit' translations. Often used by Korean tech CEOs in interviews when discussing innovation.

Practice in Real Life

Real-World Contexts

Office/Work

회의가 비효율적입니다.
업무 프로세스가 비효율적이에요.
인력 배치가 비효율적입니다.
이 보고서는 비효율적이에요.

School/Studying

비효율적인 공부 방법.
밤을 새우는 것은 비효율적이다.
학습 계획이 비효율적이에요.
단순 암기는 비효율적일 수 있습니다.

Finance/Money

비효율적인 지출.
투자 대비 비효율적이다.
돈을 비효율적으로 쓰다.
경제적으로 비효율적입니다.

Technology

비효율적인 코드.
배터리 소모가 비효율적이다.
시스템이 비효율적으로 작동함.
비효율적인 알고리즘.

Daily Life/Travel

비효율적인 이동 경로.
짐을 너무 많이 싸는 건 비효율적이야.
요리 순서가 비효율적이에요.
비효율적인 아침 루틴.

Conversation Starters

"요즘 일하는 방식이 좀 비효율적이라고 생각하지 않으세요? (Don't you think the way we work lately is a bit inefficient?)"

"어떤 공부 방법이 가장 비효율적이라고 생각해요? (What study method do you think is the most inefficient?)"

"한국의 Pali-pali 문화가 가끔은 비효율적일 때도 있을까요? (Do you think Korea's Pali-pali culture can be inefficient sometimes?)"

"시간을 비효율적으로 쓰지 않기 위해 무엇을 하나요? (What do you do to avoid using time inefficiently?)"

"이 앱의 인터페이스는 너무 비효율적인 것 같아요. (I think this app's interface is too inefficient.)"

Journal Prompts

오늘 나의 하루 중 가장 비효율적이었던 순간은 언제였나요? (When was the most inefficient moment of my day today?)

비효율적인 습관을 고치기 위한 나만의 계획을 써 보세요. (Write your own plan to fix inefficient habits.)

사회에서 가장 비효율적이라고 느껴지는 시스템은 무엇인가요? (What system in society do you feel is the most inefficient?)

왜 사람들은 비효율적이라는 것을 알면서도 같은 실수를 반복할까요? (Why do people repeat the same mistakes even though they know they are inefficient?)

효율성보다 중요한 가치가 있다면 무엇일까요? (If there is a value more important than efficiency, what would it be?)

Frequently Asked Questions

10 questions

It can be, but it sounds very robotic and critical. It is better to use it for a person's *method* or *habit* rather than the person themselves. For example, '그는 비효율적인 사람이다' (He is an inefficient person) sounds like a harsh performance review. Instead, say '그의 일하는 방식은 비효율적이다' (His way of working is inefficient).

'비효율' is a noun meaning 'inefficiency.' '비효율적' is a noun that acts like an adjective meaning 'inefficient.' You use '비효율' when you want to name the problem: '비효율이 발생했다' (Inefficiency occurred). You use '비효율적' to describe something: '이것은 비효율적이다' (This is inefficient).

Not really. Use '인터넷이 느려요' (The internet is slow). '비효율적' would imply the internet is working but using too much electricity or routing data in a weird way. For speed, always use '느리다'.

It is common enough that everyone understands it, but it's more frequent in news, offices, and schools. In casual talk with friends, people often just say '시간 낭비야' (It's a waste of time) or '별로야' (It's not good).

You can use adverbs like '매우' (very), '아주' (very), '정말' (really), or '극도로' (extremely). Example: '정말 비효율적이에요' (It's really inefficient).

The opposite is '효율적이다' (to be efficient). Just remove the '비' (not) prefix.

Only if you are talking about the process of making it or the price. You wouldn't say a sandwich is '비효율적' because it tastes bad. But you could say '이 샌드위치를 만드는 데 3시간이 걸리는 건 비효율적이다' (Taking 3 hours to make this sandwich is inefficient).

Yes, for this specific word. '비효율이다' is grammatically possible but sounds like 'It is inefficiency' rather than 'It is inefficient.' '비효율적이다' is the standard way to use it as an adjective.

It's used for 'inefficient code' (비효율적인 코드) or 'inefficient algorithms' (비효율적인 알고리즘). It means the software uses more RAM or CPU than it should.

There isn't a direct slang word, but people use '노답' (no answer/hopeless) or '뻘짓' (doing something useless) to describe highly inefficient actions.