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불확실성

B2 noun #4,200 most common 8 min read

불확실성

bulhwaksilseong Top 4,200

Practice it Examples Notes & Tips 불확실성 in 30 Seconds

Explanation 불확실성 in your Level:

At the A1 level, you don't really need to use the word '불확실성' (uncertainty). It is a very big and formal word. Instead, you should focus on the basic verb '모르다' (to not know) or the phrase '확실하지 않아요' (It is not certain). For example, if you are not sure about the weather, you say '날씨를 잘 몰라요.' If you are not sure if you will go to a party, you say '갈지 안 갈지 모르겠어요.' '불확실성' is like saying 'The state of non-certainty' in English—it's too heavy for a beginner! But it is good to know that the '불' (Bul) at the beginning means 'not' or 'no,' just like in '불가능' (impossible). If you see this word in a newspaper, just remember it means 'I don't know' for grown-ups and experts.

At the A2 level, you are starting to talk about more than just your basic needs. You might talk about your plans for next year or the weather next week. You still won't use '불확실성' in your daily speech, but you might see it in simple news headlines. Think of '불확실성' as the noun version of '불확실해요' (It is uncertain). If someone asks you about the future of a company, and you want to sound a bit more serious than just saying '모르겠어요,' you could say '미래가 불확실해요' (The future is uncertain). The word '불확실성' is used when we talk about the *concept* of uncertainty. For example, 'There is a lot of uncertainty about the future.' In Korean, this is '미래에 대한 불확실성이 커요.' It is a useful word to recognize when people are talking about things they can't predict.

At the B1 level, you are becoming an intermediate learner. You should start recognizing '불확실성' in articles about the economy, health, or society. You can use it to describe situations that are risky or unpredictable. For instance, when discussing your career, you might say, '요즘 취업 시장의 불확실성이 높아서 걱정이에요' (I'm worried because the uncertainty of the job market is high these days). This is much better than just saying the market is 'bad.' It shows you understand that the problem is that we *don't know* what will happen. You should also learn the opposite word, '확실성' (certainty). In B1, you start to see how Korean uses Hanja (Chinese characters) to build complex nouns like this. '불' (not) + '확실' (certain) + '성' (nature/quality).

At the B2 level, '불확실성' is a keyword you should be able to use comfortably in formal writing and discussions. This is the level where you move from describing personal feelings to analyzing situations. You should use this word in debates about government policies, economic trends, or scientific theories. For example, '경제적 불확실성을 해소하기 위한 대책이 필요합니다' (Measures are needed to resolve economic uncertainty). You should also be aware of common collocations (words that go together), such as '불확실성이 증대되다' (uncertainty increases) or '불확실성에 직면하다' (to face uncertainty). At this level, you should be able to explain *why* something is uncertain using this noun as the core of your sentence. It is no longer just a vocabulary word; it is a tool for professional communication.

At the C1 level, you should have a deep understanding of the nuances of '불확실성.' You can distinguish it from similar words like '불투명성' (opacity) or '모호성' (ambiguity). You might use it in a philosophical or psychological context, discussing the 'human struggle with existential uncertainty' (인간의 실존적 불확실성). You should be able to use it as part of complex grammatical structures, such as '불확실성이 상존하는 가운데...' (Amidst persisting uncertainty...). Your usage should be precise—using '불확실성' when referring to statistical unpredictability and '불투명성' when referring to a lack of transparency in a process. You should also be able to read and understand academic papers that use this term to describe research variables or market volatility without needing a dictionary.

At the C2 level, '불확실성' is a basic building block for your high-level discourse. You can use it in highly specialized fields, such as discussing the 'Heisenberg Uncertainty Principle' (하이젠베르크의 불확정성 원리—note the slight variation in terminology here) or complex econometric models. You understand the historical and cultural context of how uncertainty is managed in Korean society (e.g., in corporate governance or social safety nets). You can use the word with rhetorical flair in speeches or high-level journalism. Your command of the word allows you to discuss the 'radical uncertainty' (근원적 불확실성) of the modern era with the same ease as a native university professor or a policy analyst. You can also manipulate the word into various forms and combine it with rare Hanja prefixes or suffixes to create specific meanings.

Practice it Examples Notes & Tips

불확실성 in 30 Seconds

불확실성 means 'uncertainty' and is used in formal contexts to describe unpredictable situations or risks.
It comes from Hanja: 불 (not) + 확실 (certain) + 성 (nature), meaning the 'nature of not being certain'.
It is common in business, economics, and news to describe market trends or political climates.
Common verbs used with it include '높다' (high), '낮다' (low), '해소하다' (resolve), and '직면하다' (face).

The term 불확실성 (Bul-hwak-sil-seong) is a sophisticated noun in Korean that translates directly to 'uncertainty.' It is composed of four Hanja (Sino-Korean) characters: 불 (不 - not), 확 (確 - firm/sure), 실 (實 - real/true), and 성 (性 - nature/quality). Together, they describe a state where nothing is definite, predictable, or guaranteed. While a beginner might simply say '잘 모르겠어요' (I don't know well), an intermediate or advanced speaker uses '불확실성' to discuss complex situations involving risk, the future, or abstract concepts.

Economic Context: In the world of finance and business, this word is ubiquitous. Analysts often speak of 'market uncertainty' (시장 불확실성) when stock prices fluctuate wildly without a clear trend. It refers to the inability to predict future investment returns or economic stability.
Scientific & Philosophical Use: In physics, specifically quantum mechanics, the 'Uncertainty Principle' is translated as '불확정성 원리', a close relative of our word. In general philosophy, it touches upon the human condition of not knowing what tomorrow brings, often linked to existential anxiety.

경제 전문가들은 금리 인상으로 인한 시장의 불확실성이 커지고 있다고 경고했습니다. (Economic experts warned that market uncertainty due to interest rate hikes is increasing.)

You will encounter this word most frequently in news broadcasts, academic papers, and professional meetings. It carries a formal tone, making it unsuitable for casual chatting with friends about where to eat lunch, unless you are being intentionally dramatic or intellectual. Instead, use it when discussing career paths, global events, or scientific data where 'lack of certainty' is a defined characteristic of the situation.

인생은 항상 불확실성으로 가득 차 있지만, 그 안에서 기회를 찾아야 합니다. (Life is always full of uncertainty, but we must find opportunities within it.)

Psychological Aspect: Psychologists use the term 'Intolerance of Uncertainty' (불확실성에 대한 인내력 부족) to describe a trait where individuals find ambiguous situations stressful. Understanding this word helps in discussing mental health and resilience in Korean.

The word is often paired with verbs like '증대되다' (to increase/expand), '해소하다' (to resolve/clear up), or '직면하다' (to face). For instance, '불확실성을 해소하기 위해' means 'in order to resolve the uncertainty.' This transition from a vague feeling to a concrete noun allows for much more precise communication in formal Korean settings.

정부의 새로운 정책은 부동산 시장의 불확실성을 줄이는 데 초점을 맞추고 있습니다. (The government's new policy focuses on reducing uncertainty in the real estate market.)

Using 불확실성 correctly requires understanding its role as a formal noun. It usually functions as the subject or object of a sentence, frequently followed by particles like -이/가 (subject) or -을/를 (object). Because it is an abstract noun, it often appears in complex sentences with descriptive clauses.

Common Verb Pairings: 1. 불확실성이 높다/낮다: Uncertainty is high/low. This is the most common way to describe a situation.
2. 불확실성을 제거하다: To remove uncertainty.
3. 불확실성에 대응하다: To respond/cope with uncertainty.

우리는 미래의 불확실성에 대비하여 저축을 해야 합니다. (We must save money in preparation for future uncertainty.)

In academic or journalistic writing, you will see it combined with other nouns to create compound concepts. For example, '정치적 불확실성' (political uncertainty) or '기술적 불확실성' (technological uncertainty). These compounds help narrow down exactly what kind of unpredictability is being discussed. Notice how the adjective form '불확실한' (uncertain) is often used to modify other nouns directly, while '불확실성' stands alone as the concept itself.

투자자들은 불확실성이 해소될 때까지 투자를 보류하고 있습니다. (Investors are putting off investments until the uncertainty is resolved.)

Sentence Structure Patterns: [N-의] 불확실성 + [Verb]: The uncertainty of [Noun] + [Verb].
예: 날씨의 불확실성 때문에 여행 계획을 취소했다. (I canceled travel plans because of the uncertainty of the weather.)

Furthermore, in business presentations, you might use the phrase '불확실성을 최소화하다' (to minimize uncertainty). This is a powerful way to express a strategic goal. By mastering the usage of this word, you move beyond simple descriptions of 'not knowing' into the realm of analyzing and managing complex variables in Korean.

현대 사회에서 불확실성은 피할 수 없는 요소입니다. (In modern society, uncertainty is an unavoidable element.)

If you turn on a Korean news channel like KBS or MBC, especially during the 'Economy' or 'Politics' segments, you will hear 불확실성 almost daily. It is the preferred term for news anchors and experts when discussing why the stock market is crashing or why a certain election outcome is hard to predict. It provides a level of professional distance and objectivity that words like '걱정' (worry) or '의심' (doubt) lack.

In the Media: Headlines often read: '글로벌 경제 불확실성 확산' (Global economic uncertainty spreading). This signifies that factors like trade wars or pandemics are making the future hard to read.
In Corporate Life: During a '주간 회의' (weekly meeting), a manager might say, '이번 프로젝트는 불확실성이 너무 큽니다' (This project has too much uncertainty). This is a formal way of saying the project is risky or lacks clear data.

기상청은 태풍의 경로에 대한 불확실성이 커서 주의가 필요하다고 발표했습니다. (The Meteorological Administration announced that caution is needed due to the high uncertainty of the typhoon's path.)

You will also find this word in documentaries and educational YouTube channels (like 'Shuka World' or science channels) that explain complex global phenomena. It’s a keyword for anyone interested in Korean current events. When people discuss the 'Post-COVID' era, '불확실성' is the central theme—discussing how the world has changed in ways we can't yet fully map out.

대학생들은 졸업 후 취업 시장의 불확실성 때문에 고민이 많습니다. (University students have many worries due to the uncertainty of the job market after graduation.)

Finally, in literature and sophisticated essays, authors use '불확실성' to describe the human soul or the nature of relationships. It elevates the writing from a simple story to a thematic exploration of life's unpredictability. Hearing this word in a conversation usually signals that the topic has shifted from mundane daily life to something more structural or conceptual.

One of the most common mistakes learners make with 불확실성 is using it in overly casual situations. Because it is a high-level Hanja word, saying '오늘 점심 메뉴의 불확실성이 높아요' (The uncertainty of today's lunch menu is high) sounds very strange and overly robotic. In casual speech, you should use '확실하지 않아요' (It's not certain) or '모르겠어요' (I don't know).

Confusing with '불안' (Anxiety): Learners often use '불확실성' when they mean they are feeling anxious. While uncertainty causes anxiety, they are not the same. '불확실성' describes the situation, while '불안' (anxiety/unease) describes the emotion.
Particle Errors: Using '불확실성을 있다' is incorrect. Since '있다' (to exist) takes a subject, you must use '불확실성이 있다'. Conversely, with '제거하다' (to remove), you must use '불확실성을 제거하다'.

❌ 제 마음의 불확실성 때문에 슬퍼요. (Sounds too clinical/formal for personal feelings.)
✅ 앞날이 확실하지 않아서 불안해요. (Much more natural for personal worry.)

Another mistake is confusing it with '불투명성' (opacity/lack of transparency). While they are related, '불투명성' is used when information is being hidden or is naturally unclear (like a 'non-transparent process'), whereas '불확실성' is used when the outcome is inherently unpredictable (like 'market uncertainty'). Using them interchangeably can slightly change your intended meaning.

❌ 이 질문의 불확실성을 모르겠어요. (Meaning: I don't know the uncertainty of this question.)
✅ 이 질문의 의도를 모르겠어요. (Meaning: I don't know the intention of this question.)

Lastly, remember that '불확실성' is a noun. You cannot say '불확실성하다'. To use it as an adjective, you must use '불확실하다' (to be uncertain). This is a common error among learners who try to turn every noun into a '-하다' verb. Always check if the word has a separate adjective form!

To truly master Korean, you need to know which 'uncertainty' word fits each nuance. While 불확실성 is the gold standard for general uncertainty, several other words occupy nearby semantic space.

불확실성 vs. 모호함 (Ambiguity): 불확실성 is about not knowing the outcome. 모호함 is about the meaning being unclear. If a contract has two possible interpretations, it is '모호하다'. If you don't know if the contract will be signed, it is '불확실하다'.
불확실성 vs. 불투명성 (Opacity): 불투명성 suggests that the future is 'cloudy' or 'dark'. It is often used for career prospects or political situations where you can't see what's coming next because of a lack of transparency.
불확실성 vs. 가변성 (Variability): 가변성 refers to the quality of being able to change. While a variable situation is often uncertain, '가변성' focuses on the potential for change itself rather than the lack of knowledge about it.

그의 태도는 매우 모호해서 진심을 알 수 없습니다. (His attitude is so ambiguous that I can't know his true feelings.)

In very formal contexts, you might also hear '의구심' (doubts/suspicions). This is used when the uncertainty is directed toward a person's honesty or the validity of a claim. For example, '의구심이 들다' means to have lingering doubts. In contrast, '불확실성' is more systemic and less about personal suspicion.

정부의 발표에도 불구하고 시장의 의구심은 여전합니다. (Despite the government's announcement, the market's doubts still remain.)

By choosing the right synonym, you demonstrate a nuanced understanding of Korean social and professional logic. While '불확실성' is a great 'catch-all' for B2/C1 levels, knowing when to switch to '모호함' or '불투명성' will make you sound like a native speaker who understands the specific flavor of the 'unknown' they are describing.

How Formal Is It?

Fun Fact

The '성' (性) suffix is incredibly productive in Korean, similar to '-ity' or '-ness' in English. Once you learn '불확실성', you can easily understand '투명성' (transparency), '중요성' (importance), and hundreds of other abstract nouns.

Pronunciation Guide

UK /bul.βwak.ɕil.s͈ʌŋ/

US /bul.hwak.sil.s͈ʌŋ/

In Korean, stress is generally even across syllables, but the tensed syllables (실 -> 씰, 성 -> 썽) will naturally feel slightly more emphasized.

Rhymes With

가능성 (Possibility) 필요성 (Necessity) 중요성 (Importance) 일관성 (Consistency) 객관성 (Objectivity) 주관성 (Subjectivity) 안전성 (Stability/Safety) 투명성 (Transparency)

Common Errors

Pronouncing '실' as a soft 'sil' instead of tensed 'ssil'.
Failing to pronounce the 'h' in 'hwak' clearly.
Making the 'l' in 'bul' too heavy like the English word 'bull'.
Pronouncing '성' as 'sung' like in English; it should be an open 'eo' sound.
Separating the syllables too much; it should flow as one concept.

Difficulty Rating

Reading 4/5

Common in news and books, but requires knowledge of Hanja-based abstract nouns.

Writing 5/5

Requires correct particle usage and formal verb pairings to sound natural.

Speaking 4/5

Pronunciation is tricky due to tensing (ssil, sseong), and it's easy to over-use in casual speech.

Listening 3/5

Clearly articulated in news, but can be missed in fast-paced professional discussions.

What to Learn Next

Prerequisites

확실하다 모르다 성질 부족

Learn Next

불투명성 모호성 가변성 리스크

Advanced

인과관계 상관관계 확률론 결정론

Grammar to Know

Noun + -에 대한 (About Noun)

미래에 대한 불확실성

Noun + -으로 인한 (Due to Noun)

전쟁으로 인한 불확실성

Noun + -이/가 증대되다 (N increases)

불확실성이 증대되다

Adjective + -ㄴ/은 가운데 (Amidst...)

불확실성이 높은 가운데

Verb + -기 위해 (In order to...)

불확실성을 줄이기 위해

Examples by Level

내일 날씨는 확실하지 않아요.

Tomorrow's weather is not certain.

A1 level uses '확실하지 않다' instead of the noun '불확실성'.

그것은 확실해요?

Is that certain?

Basic question form of the root word.

저는 잘 몰라요.

I don't know well.

The simplest way to express uncertainty at A1.

확실한 답을 주세요.

Please give me a certain answer.

Using the adjective '확실한'.

이것은 아니에요.

This is not it.

Expressing negation, related to the '불' prefix.

진짜예요?

Is it real?

Asking for certainty in a casual way.

아마도 그럴 거예요.

Maybe it will be so.

Expressing probability.

약속은 확실해요.

The promise is certain.

Stating certainty.

미래는 불확실해요.

The future is uncertain.

A2 uses the adjective '불확실하다'.

결과가 아직 불확실합니다.

The result is still uncertain.

Formal polite ending '-습니다'.

불확실한 계획은 위험해요.

Uncertain plans are dangerous.

Adjective modifying a noun.

그의 말이 확실한지 모르겠어요.

I don't know if his words are certain.

-는지 모르겠다 structure.

확실성보다 안전이 중요해요.

Safety is more important than certainty.

Introducing the noun form in a simple comparison.

날씨가 불확실해서 우산을 가져가요.

The weather is uncertain, so I'm taking an umbrella.

-어서 (reason) connector.

시험 결과가 불확실해요.

The exam result is uncertain.

Subject + Adjective.

이 길은 불확실한 길이에요.

This path is an uncertain path.

Noun + 이다.

시장의 불확실성이 커지고 있습니다.

Market uncertainty is growing.

Using '불확실성' as a subject with -이/가.

우리는 불확실성을 줄여야 합니다.

We must reduce uncertainty.

Using '불확실성' as an object with -을/를.

인생의 불확실성은 누구에게나 있어요.

Uncertainty in life exists for everyone.

Possessive marker '의'.

불확실성 때문에 투자를 못 해요.

I can't invest because of the uncertainty.

Noun + 때문에 (because of).

정보가 부족해서 불확실성이 높아요.

Uncertainty is high due to a lack of information.

Describing the level of uncertainty (높다).

불확실성을 해결하는 방법이 뭐예요?

What is the way to solve the uncertainty?

N-을/를 해결하다 (to solve).

취업 시장의 불확실성이 심각합니다.

The uncertainty of the job market is serious.

Describing the state as '심각하다' (serious).

그 계획은 불확실성이 너무 많아요.

That plan has too much uncertainty.

Using '많다' (to be many/much).

정치적 불확실성이 경제에 악영향을 미칩니다.

Political uncertainty has a bad influence on the economy.

Compound noun: 정치적 불확실성.

불확실성에 직면했을 때 냉정해야 합니다.

You must be calm when facing uncertainty.

N-에 직면하다 (to face/confront).

기업들은 미래의 불확실성에 대비하고 있습니다.

Companies are preparing for future uncertainty.

N-에 대비하다 (to prepare for).

불확실성을 제거하는 것이 우리의 목표입니다.

Removing uncertainty is our goal.

-는 것 (nominalizer) + 목표이다.

과학은 불확실성을 탐구하는 학문입니다.

Science is a field that explores uncertainty.

N-을/를 탐구하다 (to explore/investigate).

글로벌 금융 시장의 불확실성이 증대되었습니다.

Uncertainty in the global financial market has expanded.

Using the formal verb '증대되다'.

불확실성 속에서도 기회는 존재합니다.

Opportunities exist even amidst uncertainty.

N- 속에서도 (even inside/amidst).

우리는 불확실성을 관리할 능력이 있습니다.

We have the ability to manage uncertainty.

N-을/를 관리하다 (to manage).

불확실성이 상존하는 시장 환경에서는 유연함이 필수적이다.

In a market environment where uncertainty always exists, flexibility is essential.

Using '상존하다' (to always exist/coexist).

현대 철학은 존재의 근원적 불확실성을 논한다.

Modern philosophy discusses the fundamental uncertainty of existence.

Academic term: 근원적 불확실성.

불확실성에 대한 공포가 사회적 혼란을 야기했다.

Fear of uncertainty caused social chaos.

N-을/를 야기하다 (to cause/trigger).

정부의 모호한 태도가 시장의 불확실성을 가중시켰다.

The government's ambiguous attitude aggravated market uncertainty.

N-을/를 가중시키다 (to aggravate/increase).

불확실성을 수용하는 태도가 창의성의 원천이 될 수 있다.

An attitude of accepting uncertainty can be a source of creativity.

N-을/를 수용하다 (to accept/embrace).

데이터의 불확실성을 최소화하기 위해 정밀한 분석이 요구된다.

Precise analysis is required to minimize the uncertainty of the data.

Passive form: 요구된다 (is required).

그 정책은 불확실성을 해소하기에는 역부족이었다.

That policy was insufficient to resolve the uncertainty.

Idiomatic expression: 역부족이다 (to be beyond one's ability).

미래의 불확실성을 확률로 계산하는 것은 한계가 있다.

There are limits to calculating future uncertainty with probability.

N-에 한계가 있다 (to have limits).

하이젠베르크의 불확정성 원리는 현대 물리학의 근간을 이룬다.

Heisenberg's Uncertainty Principle forms the basis of modern physics.

Specific scientific term: 불확정성 (indeterminacy/uncertainty).

포스트모더니즘은 절대적 진리 대신 불확실성과 다양성을 강조한다.

Postmodernism emphasizes uncertainty and diversity instead of absolute truth.

Philosophical context.

경제 주체들은 불확실성을 회피하려는 경향이 강하다.

Economic agents have a strong tendency to avoid uncertainty.

Formal term: 경제 주체 (economic agents).

불확실성의 시대에 리더십의 본질은 방향 제시에 있다.

In an era of uncertainty, the essence of leadership lies in providing direction.

Rhetorical structure: N-의 본질은 ...에 있다.

구조적 불확실성은 단순한 정책 변화만으로는 해결되지 않는다.

Structural uncertainty cannot be solved by simple policy changes alone.

Term: 구조적 불확실성 (structural uncertainty).

불확실성을 통제하려는 인간의 욕망은 문명의 발전을 이끌었다.

The human desire to control uncertainty has led the development of civilization.

Advanced verb: 통제하다 (to control).

정보의 비대칭성은 시장 내의 불확실성을 증폭시키는 요인이다.

Information asymmetry is a factor that amplifies uncertainty within the market.

Economics term: 정보의 비대칭성 (information asymmetry).

불확실성을 내포한 결정은 항상 리스크를 동반한다.

Decisions involving uncertainty always involve risk.

Advanced verb: 내포하다 (to involve/contain).

Synonyms

불투명성 가변성 의구심 모호함

Antonyms

확실성 안정성

Common Collocations

불확실성을 해소하다

불확실성에 직면하다

경제적 불확실성

불확실성이 높다

불확실성을 줄이다

미래의 불확실성

불확실성이 증대되다

불확실성을 제거하다

정치적 불확실성

불확실성에 대비하다

Common Phrases

불확실성의 시대

— An era of uncertainty. Used to describe the modern world where changes are rapid and unpredictable.

우리는 지금 불확실성의 시대를 살고 있습니다.

불확실성이 상존하다

— Uncertainty always exists. Used in formal contexts to say that uncertainty is a constant factor.

금융 시장에는 항상 불확실성이 상존합니다.

불확실성을 안고 가다

— To move forward while carrying uncertainty. Implies accepting risk and continuing.

우리는 불확실성을 안고 새로운 도전을 시작했다.

불확실성을 키우다

— To increase or fuel uncertainty. Often used regarding bad news or vague statements.

그의 애매한 말은 불확실성만 키웠다.

불확실성에 휩싸이다

— To be engulfed in uncertainty. Used for extreme situations where nothing is clear.

나라는 현재 큰 불확실성에 휩싸여 있다.

불확실성을 잠재우다

— To calm or suppress uncertainty. Used when a decisive action makes things clear.

새로운 발표가 시장의 불확실성을 잠재웠다.

불확실성을 최소화하다

— To minimize uncertainty. A common goal in management and planning.

리스크 관리는 불확실성을 최소화하는 과정이다.

불확실성이 가중되다

— Uncertainty is being added to or aggravated. Used when things get even more complicated.

악재가 겹치면서 불확실성이 가중되고 있다.

불확실성을 헤쳐나가다

— To push through or overcome uncertainty. Implies resilience and effort.

우리는 지혜를 모아 불확실성을 헤쳐나가야 합니다.

불확실성이 사라지다

— Uncertainty disappears. Used when a situation is finally decided.

선거가 끝나자 불확실성이 사라졌다.

Often Confused With

불확실성 vs 불안

불안 is the feeling of anxiety; 불확실성 is the situation that causes it.

불확실성 vs 불투명성

불투명성 is about lack of transparency or a 'cloudy' future; 불확실성 is about unpredictability.

불확실성 vs 모호함

모호함 is ambiguity in meaning; 불확실성 is uncertainty in outcome.

Idioms & Expressions

"안개 속을 걷다"

— To walk in the fog. This describes being in a state of extreme uncertainty where you can't see the future.

회사의 미래가 안개 속을 걷는 것 같다.

Metaphorical

"한 치 앞을 내다볼 수 없다"

— Cannot see even an inch ahead. Used for situations where the immediate future is totally unpredictable.

지금 상황은 한 치 앞을 내다볼 수 없을 정도로 불확실하다.

Common Idiom

"오리무중"

— Lost in a five-mile fog. A four-character idiom (Saja-seong-eo) meaning something is completely unclear.

범인의 행방이 오리무중이다.

Formal/Literary

"바람 앞의 등불"

— A lamp in front of the wind. Describes a very precarious and uncertain situation that could end at any moment.

회사의 운명이 바람 앞의 등불 같다.

Classical Idiom

"살얼음판을 걷다"

— Walking on thin ice. Describes a situation full of uncertainty and danger where one must be very careful.

그는 지금 살얼음판을 걷는 기분으로 결과를 기다리고 있다.

Common Idiom

"주사위는 던져졌다"

— The die is cast. Used when a decision has been made despite uncertainty, and there's no turning back.

이미 주사위는 던져졌으니 결과를 기다릴 뿐이다.

International Idiom

"앞이 캄캄하다"

— The front is pitch black. Used when one feels hopeless due to the uncertainty of the future.

취직이 안 돼서 앞이 캄캄하다.

Colloquial

"갈팡질팡하다"

— To waver or hesitate. Describes the action of someone who is confused by uncertainty.

그는 결정을 내리지 못하고 갈팡질팡하고 있다.

Informal

"천지개벽"

— The creation of heaven and earth. Used for a massive, unpredictable change that changes everything.

세상이 천지개벽할 정도로 변하고 있다.

Emphatic

"뜬구름 잡다"

— Catching a floating cloud. Used to describe pursuing something vague and uncertain.

그의 계획은 뜬구름 잡는 소리처럼 들린다.

Metaphorical

Easily Confused

불확실성 vs 불확정성

They sound almost identical.

불확정성 is specifically used in science (Heisenberg) or logic to mean 'indeterminacy'. 불확실성 is more general.

양자역학의 불확정성 원리 vs 시장의 불확실성.

불확실성 vs 불안정성

Both imply a lack of stability.

불안정성 means something is shaky or likely to collapse. 불확실성 just means we don't know what will happen.

건물의 불안정성 vs 계획의 불확실성.

불확실성 vs 위험성

Uncertainty often leads to risk.

위험성 (riskiness) implies a high chance of a negative outcome. 불확실성 could lead to either a good or bad outcome.

수술의 위험성 vs 결과의 불확실성.

불확실성 vs 의구심

Both involve not being sure.

의구심 is a mental state of suspicion or doubt toward something. 불확실성 is an objective state of the situation.

그의 말에 의구심이 들다 vs 미래의 불확실성.

불확실성 vs 변동성

High volatility causes uncertainty.

변동성 (volatility) refers to how much something changes over time. 불확실성 is the lack of knowledge about those changes.

주가의 변동성 vs 시장의 불확실성.

Sentence Patterns

[Context]-의 불확실성이 [Adjective]다.

시장의 불확실성이 매우 높다.

[Subject]-은/는 불확실성을 해소하기 위해 [Action]-한다.

기업은 불확실성을 해소하기 위해 투자를 줄인다.

[Noun]-으로 인한 불확실성이 가중되고 있다.

금리 인상으로 인한 불확실성이 가중되고 있다.

불확실성에도 불구하고 [Result].

불확실성에도 불구하고 매출이 증가했다.

미래의 불확실성에 대비하여 [Action].

미래의 불확실성에 대비하여 기술을 배운다.

불확실성이 상존하는 가운데 [Situation].

불확실성이 상존하는 가운데 신제품을 출시했다.

불확실성 때문에 [Negative Result].

불확실성 때문에 여행을 취소했다.

불확실성을 내포한 [Noun]은/는 [Risk].

불확실성을 내포한 투자는 항상 위험하다.

Word Family

Nouns

확실성 (Certainty)

확실 (Certainty/Fact)

불확정 (Indetermination)

Verbs

확실하다 (To be certain)

불확실하다 (To be uncertain)

확인하다 (To confirm)

Adjectives

확실한 (Certain)

불확실한 (Uncertain)

위험 (Risk)

가능성 (Possibility)

확률 (Probability)

모호함 (Ambiguity)

변수 (Variable)

How to Use It

frequency

Very high in news, economics, and academic writing; low in casual daily life.

Common Mistakes

Using '불확실성하다' → 불확실하다
'불확실성' is a noun. You cannot add '-하다' to it. Use the adjective '불확실하다' instead.
Using '불확실성을 있다' → 불확실성이 있다
'있다' (to exist) takes a subject marked by '이/가', not an object marked by '을/를'.
Confusing '불확실성' with '불안' → 미래의 불확실성 때문에 불안해요.
'불확실성' is the situation; '불안' is the emotion you feel because of it.
Using it for simple 'I don't know' situations. → 내일 친구를 만날지 확실하지 않아요.
Using '불확실성' to talk about meeting a friend for coffee sounds weirdly formal/robotic.
Mispronouncing '실성' as [sil-seong] → [ssil-sseong]
The 'ㅅ' sounds become tensed after the 'ㄱ' sound in '확'.

Tips

Formal Writing

Always use '불확실성' in reports or essays. It gives your writing a professional and analytical tone that '모르겠다' cannot provide.

Verb Pairings

Memorize '불확실성을 해소하다' (resolve) and '불확실성이 증대되다' (increase). These are fixed expressions in the business world.

vs. Opacity

Use '불투명성' when you feel someone is hiding something. Use '불확실성' when nobody knows the answer because the future hasn't happened yet.

Interview Tip

If asked about your weaknesses, say you sometimes struggle with '불확실성' but have learned to manage it through thorough planning.

Hanja Power

Remember '불' means 'not'. This will help you decode other words like '불가능' (impossible) and '불필요' (unnecessary).

News Keywords

When you hear '불확실성' on the news, the next few sentences will usually explain *why* (e.g., because of war, oil prices, or elections).

Risk Aversion

Understand that '불확실성' is a very 'scary' word in Korean corporate culture, which often values long-term stability and clear hierarchies.

Compound Nouns

Don't be afraid to put adjectives in front: '사회적 불확실성', '심리적 불확실성'. It makes your Korean sound very advanced.

Visualizing Fog

Associate the word with a 'foggy road'. You can't see the end, but you have to keep driving. That is '불확실성'.

Avoid Repetition

In a long paragraph, switch between '불확실성' and '이러한 상황' (this situation) or '리스크' to keep the reader engaged.

Memorize It

Mnemonic

Think of 'Bul' as 'Bull' (no) and 'Hwak-sil' as 'Walk-seal' (a seal of approval). If there is no seal of approval on your walk, there is 'Bul-hwak-sil-seong' (uncertainty)!

Visual Association

Imagine a person standing at a crossroad in thick fog. They can't see which way to go. That fog is the '불확실성'.

Word Web

Risk Future Market Doubt Fog Probability Choice Change

Challenge

Try to write a sentence using '불확실성' and '해소하다' (to resolve) about a problem you have at work or school.

Word Origin

Composed of Sino-Korean (Hanja) roots. '불' (不) means 'no' or 'not'. '확' (確) means 'firm' or 'sure'. '실' (實) means 'real' or 'true'. '성' (性) means 'nature' or 'quality'.

Original meaning: The nature of not being firmly true or sure.

Sino-Korean (Hanja-based vocabulary).

Cultural Context

No specific sensitivities, but avoid using it mockingly to describe someone's indecisiveness, as it is a formal term.

Similar to how 'uncertainty' is a buzzword in Western business media, '불확실성' is a staple of Korean economic news.

Heisenberg's Uncertainty Principle (하이젠베르크의 불확정성 원리) The Age of Uncertainty (불확실성의 시대) - book by John Kenneth Galbraith Modern Korean news headlines about the KOSPI index.

Practice in Real Life

Real-World Contexts

Stock Market News

시장의 불확실성
변동성 확대
투자 심리 위축
불확실성 해소

Career Counseling

진로의 불확실성
적성 탐색
취업 준비
미래 설계

Scientific Research

데이터의 불확실성
오차 범위
실험 결과
가설 검증

Weather Forecast

진로의 불확실성
기상 이변
예측 모델
주의 당부

Psychology/Self-help

불확실성에 대한 불안
통제 욕구
마음가짐
회복 탄력성

Conversation Starters

"요즘 경제적 불확실성 때문에 투자를 망설이는 분들이 많은데, 어떻게 생각하세요?"

"인생의 불확실성을 즐기는 편이신가요, 아니면 계획적인 편이신가요?"

"직업을 선택할 때 안정성이 중요할까요, 아니면 불확실하더라도 도전이 중요할까요?"

"최근 뉴스에서 본 가장 큰 불확실성은 무엇이었나요?"

"불확실한 상황에서 결정을 내려야 할 때, 본인만의 노하우가 있나요?"

Journal Prompts

내 삶에서 가장 불확실하다고 느껴지는 부분은 무엇이며, 그것을 어떻게 받아들이고 있나요?

만약 세상에 불확실성이 하나도 없다면, 우리 삶은 어떻게 변할까요? 긍정적일까요, 부정적일까요?

최근에 불확실성을 뚫고 내린 결정이 있다면 무엇이었고, 그 결과는 어떠했나요?

불확실성을 줄이기 위해 내가 매일 실천할 수 있는 구체적인 행동 세 가지를 적어보세요.

내가 생각하는 '불확실성의 시대'를 정의해보고, 그 안에서 살아남는 전략을 써보세요.

Frequently Asked Questions

10 questions

Mostly, yes. In business and economics, uncertainty is usually seen as a negative factor because it makes planning difficult. However, in philosophy or art, it can be seen as a source of possibility and creativity. Example: '불확실성은 새로운 기회의 시작이다' (Uncertainty is the start of new opportunities).

Not usually. You wouldn't say a person is '불확실성'. You would say their '행보' (path/actions) or '태도' (attitude) shows '불확실성'. To describe an indecisive person, use '우유부단하다'.

'불확실성' is more formal and academic (the concept of uncertainty). '불확실함' is the nominalized form of the adjective '불확실하다' and feels slightly more personal or descriptive of a specific instance. Use '불확실성' for news and '불확실함' for essays about feelings.

It is '하이젠베르크의 불확정성 원리'. Note that scientists use '불확정성' (indeterminacy) instead of '불확실성'.

Yes, it is 100% Hanja: 不(불) 確(확) 實(실) 性(성). Learning these characters helps you understand many related words like '확인', '실제', '성격', etc.

If it's the subject of the sentence (e.g., 'Uncertainty is high'), use '이': '불확실성이 높다'. If it's the object (e.g., 'Reduce uncertainty'), use '을': '불확실성을 줄이다'.

It will sound very stiff. It's like texting a friend 'The uncertainty of our dinner location is high.' Better to say '어디 갈지 확실하지 않네' (It's not certain where we're going).

'리스크' (risk), '변수' (variable), and '모호성' (ambiguity) are often used alongside or instead of '불확실성' depending on the exact nuance needed.

Not necessarily, but it implies 'risk'. Risk can lead to gain or loss, but the lack of knowledge (uncertainty) is what makes people cautious.

Read the economy section of Korean news sites like Naver News or Daum News. You will see '불확실성' in almost every article about the stock market or global trade.