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B1 adjective 9分で読める

nébuleux

例文 メモとヒント nébuleux 30秒で
解説 nébuleux in your Level:
At the A1 level, you usually learn words for things you can see and touch. 'Nébuleux' is a bit advanced for A1, but you can think of it as a fancy way to say 'cloudy' (nuageux). Imagine looking at the sky on a gray day. In A1, you mostly use 'il y a des nuages' (there are clouds). 'Nébuleux' is like saying the sky is full of mist or fog. It is related to the word 'nuage' (cloud). You won't need to use this word often at this level, but if you see it, just remember it means something is not clear, like looking through a window when it is foggy outside. It is an adjective, so it describes a noun. For example, 'un ciel nébuleux' is a cloudy sky. Focus on the idea of 'not clear' and 'clouds'.
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At the A2 level, you are starting to describe things in more detail. You might know words like 'clair' (clear) or 'vague' (vague). 'Nébuleux' is a step up from these. It is often used to describe things that are hard to understand. If a teacher gives a long explanation that you don't follow, you could say it was a bit 'nébuleux'. In A2, you should notice that the word changes for feminine nouns: 'un projet nébuleux' (masculine) but 'une idée nébuleuse' (feminine). At this level, you can use it to talk about stories, movies, or plans that are a bit confusing. It's more sophisticated than just saying 'je ne comprends pas'. It describes the *thing* that is hard to understand, not your feeling of confusion.
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At the B1 level, you are expected to handle abstract topics. This is where 'nébuleux' becomes very useful. You can use it to criticize a political speech, a business plan, or a complicated theory. It means 'hazy' or 'indistinct'. For a B1 learner, it's important to distinguish 'nébuleux' from 'flou' (blurry). While 'flou' is often for physical things like photos, 'nébuleux' is for ideas. If someone asks you about your future plans and you aren't sure yet, you might say: 'Mes projets sont encore un peu nébuleux.' This sounds much more natural and advanced than 'Je ne sais pas'. You should also be able to use it with adverbs like 'trop' (too) or 'assez' (quite). It's a key word for expressing uncertainty in a professional or academic setting.
At the B2 level, you should be comfortable using 'nébuleux' in both formal writing and debate. You will encounter it in newspapers like *Le Monde* or *Le Figaro*, often describing 'la nébuleuse' (as a noun) to refer to complex, shadowy networks of organizations. As an adjective, you can use it to analyze literature or media. For example, 'L'intrigue de ce roman est volontairement nébuleuse' (The plot of this novel is intentionally hazy). At this level, you understand that 'nébuleux' can imply that someone is being intentionally vague to avoid responsibility. You can also use it to describe historical periods where records are scarce: 'Les origines de cette tradition restent nébuleuses.' Your usage should show that you understand the nuance between a lack of clarity and a lack of information.
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At the C1 level, you use 'nébuleux' with precision and stylistic flair. You might use it to discuss philosophical concepts or complex scientific theories where boundaries are not clearly defined. You understand its etymological roots and can use it to create specific atmospheres in your writing. You might contrast 'la clarté cartésienne' (Cartesian clarity) with 'un concept nébuleux'. You are also aware of the noun form 'une nébuleuse' in astronomy and its metaphorical use for decentralized groups (e.g., 'la nébuleuse Al-Qaïda'). In a C1 essay, you might use 'nébuleux' to describe the 'contours nébuleux' of a social movement. Your mastery of the word includes knowing its synonyms like 'sibyllin', 'abscons', or 'cryptique' and choosing 'nébuleux' specifically for its connotation of mist and lack of definition.
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At the C2 level, 'nébuleux' is part of a vast repertoire of descriptive adjectives. You can use it in highly technical or literary contexts. You might discuss the 'esthétique nébuleuse' of certain Impressionist painters or the 'ontologie nébuleuse' of a modern philosopher. You can use the word to play with irony or to provide very subtle critiques in high-level diplomatic or academic discourse. You are sensitive to the word's rhythm in a sentence and might use it for its poetic value. At this level, you don't just know what the word means; you know how it feels in a sentence, how it interacts with other words, and how to use it to evoke a specific emotional or intellectual response in your reader or listener. You might even use it to describe the very nature of language itself: 'Le langage est un système nébuleux où les sens se chevauchent'.
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例文 メモとヒント

nébuleux 30秒で

  • Nébuleux means hazy or vague, used for both misty weather and unclear ideas.
  • It is a formal adjective that changes to 'nébuleuse' in the feminine form.
  • Commonly used to critique confusing speeches, complex plans, or mysterious networks.
  • It carries a nuance of intellectual lack of clarity, distinct from visual blurriness.

The French adjective nébuleux (feminine: nébuleuse) is a sophisticated term that captures the essence of lack of clarity. At its most literal, it describes something related to clouds or mist, but in modern French, it is most frequently used figuratively to describe ideas, plans, or explanations that are intentionally or unintentionally vague. When you encounter this word, think of a thick fog rolling over a landscape; you know there is something there, but the edges are blurred, and the details are impossible to discern. It is a word that belongs to the middle-to-high register of French, making it perfect for professional critiques, literary descriptions, and intellectual discussions.

Literal Meaning
Relating to clouds (nuages) or resembling a nebula in space. Used in meteorology or astronomy to describe celestial bodies or atmospheric conditions that appear hazy.
Figurative Meaning
Describes something that lacks precision, clarity, or logical structure. It is often applied to speech, memory, or legal documents that are hard to interpret.

In everyday conversation, you might use nébuleux to describe a politician's response to a difficult question or a friend's confusing plan for a weekend getaway. It carries a slight nuance of frustration or suspicion—that the person being 'nébuleux' might be hiding something or simply hasn't thought their ideas through. Unlike the word flou (blurry), which often refers to visual focus, nébuleux suggests a deeper, more conceptual obscurity.

Le projet de loi reste extrêmement nébuleux quant au financement des nouvelles infrastructures.

Historically, the word derives from the Latin nebulosus, meaning full of mist. This connection to nature is still felt today. When a French speaker calls a concept nébuleux, they are essentially saying that the 'sunlight' of reason has not yet pierced through the 'clouds' of the explanation. It is a favorite word of critics and journalists who want to point out inconsistencies without being overly aggressive. It is more elegant than saying 'c'est pas clair' (it's not clear) and more precise than 'c'est compliqué' (it's complicated).

Whether you are discussing the origins of the universe (the literal nebulae) or the confusing plot of a French arthouse film, nébuleux provides the perfect linguistic tool to describe that which escapes easy definition. It is the bridge between the physical world of weather and the mental world of logic.

Using nébuleux correctly requires an understanding of gender agreement and its placement in a sentence. As an adjective, it follows the noun it modifies and changes form based on whether that noun is masculine or feminine. The masculine form is nébuleux (the 'x' is silent, unless followed by a vowel in liaison, though rare), and the feminine form is nébuleuse (where the 's' sounds like a 'z').

Masculine Singular
Un discours nébuleux (A hazy speech). The form remains 'nébuleux' for both singular and plural masculine nouns because it already ends in 'x'.
Feminine Singular/Plural
Une idée nébuleuse / Des idées nébuleuses. Notice the addition of 'se' for the feminine and 'ses' for the feminine plural.

In terms of sentence structure, nébuleux is versatile. It can be used as an attributive adjective (directly after the noun) or as a predicative adjective (after a linking verb like 'être' or 'sembler').

Ses explications sont devenues de plus en plus nébuleuses à mesure que la police posait des questions.

When using it in a professional context, you might pair it with words like 'concept', 'stratégie', or 'argument'. For example, 'Une stratégie nébuleuse' implies a lack of direction. In a more poetic or literary context, you might use it to describe the past or a memory: 'Un passé nébuleux' suggests a history that is shrouded in mystery or forgotten details. It is rarely used to describe people directly (e.g., 'un homme nébuleux' is uncommon), but rather their actions, words, or thoughts.

To emphasize the degree of haziness, you can use adverbs like 'assez' (quite), 'très' (very), or 'totalement' (totally). 'C'est un concept totalement nébuleux' reinforces the idea that the concept makes absolutely no sense to the listener. Conversely, you can use it in the negative: 'Ce n'est pas nébuleux du tout' (It's not hazy at all) to express that something is perfectly clear.

You are likely to encounter nébuleux in three primary arenas: the news media, academic or professional environments, and literature. It is not a word you would typically hear shouted on a playground, but it is a staple of French intellectual life.

In the News
Journalists use 'nébuleux' to describe complex financial scandals or political alliances that are difficult to trace. You might hear: 'La nébuleuse terroriste,' referring to a loose, decentralized network of groups whose structure is unclear.
In Business
During a meeting, a manager might say, 'Vos objectifs pour ce trimestre sont encore un peu nébuleux,' meaning the goals are not specific enough and need more work.

In French literature, the word is used to evoke atmosphere. A 19th-century novelist might describe a 'matin nébuleux' (a misty morning) to set a melancholic or mysterious tone. Because French culture values 'clarté' (clarity)—as the famous saying goes, 'Ce qui n'est pas clair n'est pas français'—calling something nébuleux is a significant stylistic choice. It highlights a departure from the French ideal of logical transparency.

À la télévision, l'expert a qualifié les promesses du candidat de nébuleuses et irréalisables.

You will also find it in scientific documentaries. When talking about the birth of stars, astronomers refer to 'nébuleuses' (nebulae). In this context, it is a noun, but the adjective 'nébuleux' can describe the appearance of these distant gas clouds. This dual life of the word—as both a precise scientific term and a common figurative adjective—gives it a unique texture in the French language.

While nébuleux is a useful word, learners often trip up on its specific nuances and its relationship with similar adjectives like nuageux, vague, or flou.

Nébuleux vs. Nuageux
This is the most common error. 'Nuageux' is used strictly for the weather (a cloudy sky). While 'nébuleux' can mean cloudy, it is almost never used in a simple weather report. If you say 'Le temps est nébuleux,' it sounds like you're writing a poem, not telling someone to bring an umbrella.
Nébuleux vs. Flou
'Flou' usually refers to visual blurriness (like an out-of-focus photo). While 'flou' can also be used figuratively (un avenir flou), 'nébuleux' implies a more complex, structural lack of clarity. A 'concept nébuleux' is harder to grasp than a 'concept flou'.

Another mistake is the pronunciation of the feminine form. Many learners forget to pronounce the 'z' sound for the 's' in nébuleuse. It should rhyme with 'heureuse' or 'amoureuse'. In the masculine, the 'x' is silent, so it ends with the 'uh' sound of 'eux'.

Faux : J'ai pris une photo nébuleuse de la tour Eiffel. (Use 'floue' instead).
Juste : Son explication du problème était très nébuleuse.

Finally, avoid using nébuleux to describe a person's personality unless you mean they are mysterious in a very specific, intellectual, or confusing way. If you just mean someone is 'spaced out' or 'vague' in their personality, you might use 'évasif' or 'distrait'. Nébuleux is better suited for the *content* of what they say or the *nature* of their plans.

French has a rich vocabulary for describing things that aren't clear. Depending on the exact type of 'haziness' you want to convey, you might choose one of these alternatives to nébuleux.

Vague
This is the closest synonym. It means 'vague' or 'imprecise'. Use 'vague' for everyday situations, like a vague memory or a vague promise. 'Nébuleux' is more formal and implies a deeper level of confusion.
Confus
Used when something is disorganized or jumbled. A 'discours confus' is messy, whereas a 'discours nébuleux' is hard to pin down or understand because it lacks substance.
Obscur
Meaning 'obscure' or 'dark'. Use this when something is difficult to understand because it is too complex or hidden. 'Un passé obscur' sounds more ominous than 'un passé nébuleux'.
Sibyllin
A very high-level literary term meaning 'cryptic' (like the Sibyls of ancient Greece). Use this for someone who speaks in riddles. It is even more formal than 'nébuleux'.

When choosing between these words, consider the source of the lack of clarity. If it's because of a lack of detail, use vague. If it's because the idea itself is cloudy or poorly formed, use nébuleux. If it's because the person is trying to be difficult, use obscur or sibyllin.

Comparaison :
1. Une réponse vague (Simple lack of detail).
2. Une réponse nébuleuse (Confusing and unclear structure).
3. Une réponse obscure (Hard to understand, maybe mysterious).

By mastering these synonyms, you can tailor your French to the exact situation, moving from basic communication to nuanced expression. Nébuleux remains one of the most evocative choices because of its metaphorical connection to the stars and the fog.

豆知識

The word 'nebula' in English and 'nébuleuse' in French share the exact same Latin root. While astronomers use it for giant clouds of gas in space, linguists use it to describe the 'gas' of unclear speech!

発音ガイド

UK /ne.by.lø/
US /ne.by.loʊ/
In French, stress is evenly distributed, with a slight emphasis on the final syllable 'eux'.
韻が合う語
heureux amoureux peureux dangereux généreux curieux vieux cieux
よくある間違い
  • Pronouncing the final 'x' (it is silent).
  • Using the English 'u' sound instead of the French 'u'.
  • Confusing 'é' with 'e' (must be 'nay', not 'nuh').
  • Failing to make the 'z' sound in the feminine 'nébuleuse'.
  • Pronouncing 'eux' like the 'oo' in 'moon'.
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レベル別の例文

1

Le ciel est nébuleux aujourd'hui.

The sky is cloudy today.

Masculine singular adjective modifying 'le ciel'.

2

C'est un jour nébuleux.

It is a hazy day.

Adjective follows the noun 'jour'.

3

Le sommet de la montagne est nébuleux.

The top of the mountain is misty.

Predicate adjective after 'est'.

4

Regarde ce nuage nébuleux.

Look at that hazy cloud.

Directly modifies 'nuage'.

5

La forêt est nébuleuse ce matin.

The forest is misty this morning.

Feminine singular form 'nébuleuse' for 'la forêt'.

6

J'aime le temps nébuleux.

I like hazy weather.

Standard adjective placement.

7

L'air semble nébuleux.

The air seems hazy.

Used with the verb 'sembler' (to seem).

8

Il fait un temps nébuleux au bord de la mer.

The weather is misty by the sea.

Common expression for weather.

1

Son histoire est un peu nébuleuse.

His/her story is a bit hazy.

Feminine form 'nébuleuse' for 'histoire'.

2

Les explications du prof sont nébuleuses.

The teacher's explanations are hazy.

Feminine plural 'nébuleuses'.

3

C'est un souvenir nébuleux de mon enfance.

It's a hazy memory from my childhood.

Modifies the masculine noun 'souvenir'.

4

Le plan pour samedi est encore nébuleux.

The plan for Saturday is still hazy.

Used to describe a lack of detail.

5

Je trouve ce livre un peu nébuleux.

I find this book a bit hazy/unclear.

Adjective used with 'trouver'.

6

Leurs intentions ne sont pas claires, elles sont nébuleuses.

Their intentions are not clear; they are hazy.

Contrasting 'clair' with 'nébuleux'.

7

Il y a une zone nébuleuse dans son récit.

There is a hazy area in his/her account.

'Zone' is a common noun to pair with 'nébuleuse'.

8

Pourquoi tes réponses sont-elles si nébuleuses ?

Why are your answers so hazy?

Interrogative sentence structure.

1

Le concept de ce nouveau logiciel reste nébuleux pour moi.

The concept of this new software remains hazy to me.

B1 level abstract noun 'concept'.

2

Ses projets d'avenir sont assez nébuleux.

His/her future plans are quite hazy.

Masculine plural 'projets' takes 'nébuleux'.

3

La situation politique est devenue très nébuleuse ces derniers jours.

The political situation has become very hazy in recent days.

Feminine singular 'situation'.

4

L'origine de cette rumeur est nébuleuse.

The origin of this rumor is hazy.

Abstract usage for social phenomena.

5

Nous devons clarifier ce point nébuleux du contrat.

We must clarify this hazy point of the contract.

Professional context.

6

Le film a une fin nébuleuse qui laisse place à l'interprétation.

The movie has a hazy ending that leaves room for interpretation.

Describing artistic content.

7

Il a donné une réponse nébuleuse pour éviter la question.

He gave a hazy answer to avoid the question.

Suggesting intentional vagueness.

8

L'avenir de l'entreprise semble nébuleux après la démission du PDG.

The future of the company seems hazy after the CEO's resignation.

Business context.

1

La frontière entre le bien et le mal est parfois nébuleuse.

The boundary between good and evil is sometimes hazy.

Philosophical usage.

2

Il s'agit d'une nébuleuse d'associations qui gravitent autour du parti.

It is a hazy network of associations revolving around the party.

Noun usage of 'nébuleuse' meaning 'network'.

3

Le financement de cette campagne électorale reste nébuleux.

The financing of this election campaign remains hazy.

Formal journalistic usage.

4

Ses motivations réelles sont nébuleuses, voire suspectes.

His real motivations are hazy, even suspicious.

Adding 'voire' for emphasis.

5

L'auteur utilise un style nébuleux pour renforcer le mystère.

The author uses a hazy style to enhance the mystery.

Literary analysis.

6

Les limites de sa responsabilité sont assez nébuleuses dans cette affaire.

The limits of his responsibility are quite hazy in this case.

Legal/professional nuance.

7

On se perd dans les détails nébuleux de son argumentation.

One gets lost in the hazy details of his argumentation.

Critiquing logic.

8

Une nébuleuse de gaz entoure l'étoile mourante.

A nebula of gas surrounds the dying star.

Literal scientific usage (noun).

1

La distinction entre ces deux théories est devenue nébuleuse au fil des débats.

The distinction between these two theories has become hazy over the course of the debates.

Complex academic context.

2

L'essai explore les contours nébuleux de l'identité nationale.

The essay explores the hazy contours of national identity.

Abstract sociological usage.

3

Il s'exprime dans un jargon nébuleux qui rebute les non-initiés.

He expresses himself in a hazy jargon that puts off the uninitiated.

Critique of language usage.

4

La mémoire collective est souvent nébuleuse et sujette à caution.

Collective memory is often hazy and subject to caution.

Historiographical context.

5

Le rapport d'expertise est jugé trop nébuleux par la commission d'enquête.

The expert report is deemed too hazy by the commission of inquiry.

Formal administrative context.

6

Elle garde un souvenir nébuleux, presque onirique, de cette soirée.

She keeps a hazy, almost dreamlike, memory of that evening.

Literary/poetic usage.

7

L'accord de paix reste nébuleux sur la question des frontières.

The peace agreement remains hazy on the question of borders.

Geopolitical context.

8

Sa pensée, bien que brillante, est parfois trop nébuleuse pour être mise en pratique.

His thought, though brilliant, is sometimes too hazy to be put into practice.

Nuanced intellectual critique.

1

L'œuvre de Proust navigue dans les eaux nébuleuses de la réminiscence.

Proust's work navigates the hazy waters of reminiscence.

High-level literary metaphor.

2

Les fondements de la métaphysique sont par nature nébuleux.

The foundations of metaphysics are by nature hazy.

Philosophical absolute.

3

Le concept de post-vérité a rendu le débat public particulièrement nébuleux.

The concept of post-truth has made public debate particularly hazy.

Contemporary sociopolitical analysis.

4

On assiste à l'émergence d'une nébuleuse idéologique difficile à classifier.

We are witnessing the emergence of an ideological nebula that is difficult to classify.

Advanced noun usage in political science.

5

Le discours managérial contemporain se perd souvent dans une sémantique nébuleuse.

Contemporary managerial discourse often gets lost in hazy semantics.

Linguistic critique of business culture.

6

Sa légitimité à ce poste repose sur des bases juridiques nébuleuses.

His legitimacy in this position rests on hazy legal foundations.

Precise legal/institutional critique.

7

La poésie symboliste privilégie l'évocation nébuleuse à la description précise.

Symbolist poetry privileges hazy evocation over precise description.

Art history/Literary theory.

8

Le projet transhumaniste soulève des questions éthiques aux contours nébuleux.

The transhumanist project raises ethical questions with hazy contours.

Ethics and technology context.

よく使う組み合わせ

projet nébuleux
explication nébuleuse
passé nébuleux
avenir nébuleux
concept nébuleux
contours nébuleux
souvenir nébuleux
réponse nébuleuse
zone nébuleuse
ciel nébuleux

よく使うフレーズ

rester nébuleux

— To remain unclear or vague over time.

Le motif du crime reste nébuleux pour les enquêteurs.

rendre nébuleux

— To make something confusing or hard to see.

La fatigue peut rendre tes souvenirs nébuleux.

paraître nébuleux

— To seem hazy or indistinct.

Son raisonnement nous paraît nébuleux.

un peu nébuleux

— A bit hazy (softens the critique).

C'est un peu nébuleux, tu peux préciser ?

totalement nébuleux

— Completely confusing or nonsensical.

Ce qu'il raconte est totalement nébuleux.

plus ou moins nébuleux

— More or less hazy.

La situation est plus ou moins nébuleuse selon les sources.

volontairement nébuleux

— Intentionally vague (often to hide something).

Son discours était volontairement nébuleux.

assez nébuleux

— Quite hazy.

Le résultat final est encore assez nébuleux.

une affaire nébuleuse

— A murky or suspicious case/business.

La police enquête sur une affaire nébuleuse de corruption.

une pensée nébuleuse

— A confused or poorly articulated thought.

Il s'est perdu dans une pensée nébuleuse.

慣用句と表現

"être dans le flou"

— To be in the dark or uncertain (related concept).

Je suis dans le flou concernant mon avenir.

Informal
"nager en plein brouillard"

— To be completely lost or confused.

Avec ces nouvelles règles, on nage en plein brouillard.

Informal
"la nébuleuse (noun usage)"

— Referring to a shadowy, decentralized group or network.

La nébuleuse terroriste est difficile à combattre.

Formal/Journalistic
"vendre du vent"

— To sell something with no substance (often described as nébuleux).

Ce consultant ne fait que vendre du vent.

Informal
"c'est du chinois"

— It's Greek to me (it makes no sense).

Ton explication, c'est du chinois !

Informal
"chercher midi à quatorze heures"

— To complicate something simple (making it nébuleux).

N'essaie pas de chercher midi à quatorze heures.

Common
"pêcher en eau trouble"

— To fish in troubled waters (taking advantage of a nébuleux situation).

Il profite de la crise pour pêcher en eau trouble.

Common
"faire écran de fumée"

— To create a smokescreen (to make things nébuleux).

Leurs excuses ne sont qu'un écran de fumée.

Formal
"tourner autour du pot"

— To beat around the bush (being nébuleux instead of direct).

Arrête de tourner autour du pot et dis-moi la vérité.

Common
"perdre son latin"

— To be at one's wit's end (due to a nébuleux problem).

J'en perds mon latin avec ce mode d'emploi.

Common

語族

名詞

形容詞

関連

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暗記しよう

記憶術

Think of a 'Nebula' in space. It looks like a giant, glowing cloud of gas. If an idea is 'nébuleux', it's just like that nebula: pretty to look at but impossible to hold or see through clearly.

視覚的連想

Imagine a man in a business suit walking into a thick wall of fog. He's trying to read a map (the 'projet'), but the 'nébuleux' fog makes the map unreadable.

Word Web

nuage vague confus flou mystère espace logique explication

チャレンジ

Try to use 'nébuleux' today to describe a movie plot or a news article that didn't make sense to you. Write it down: 'L'article était nébuleux'.

語源

Derived from the Latin 'nebulosus', which comes from 'nebula' meaning mist, vapor, or cloud. It entered the French language in the 12th century.

元の意味： Full of mist or covered with clouds.

Romance (Latin root)

文化的な背景

English speakers often use 'vague' or 'hazy'. 'Nébuleux' is the 'academic' version of these words.

The 'Nébuleuse d'Orio
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