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B1 adjective #1,500 よく出る 7分で読める

indispensable

Q: Is 'indispensable' masculine or feminine?

It is both! The form doesn't change because it already ends in 'e'.

Q: Does it take an 's' in the plural?

Yes, it becomes 'indispensables' when modifying plural nouns.

Q: When do I use 'à' after it?

Use 'à' for abstract targets, like 'indispensable à la paix' or 'indispensable à la vie'.

Q: When do I use 'pour' after it?

Use 'pour' for specific goals or tasks, like 'indispensable pour réussir'.

Q: Does it trigger the subjunctive?

Yes, when you say 'Il est indispensable que...', the following verb must be in the subjunctive.

Q: What is the opposite of 'indispensable'?

The most direct opposite is 'facultatif' (optional) or 'inutile' (useless).

Q: Can I use it for people?

Yes, 'Elle est indispensable' means she is essential to the group or task.

Q: Is it formal?

It can be used in both formal and informal French, but it sounds quite strong and professional.

Q: How do I pronounce the 'in'?

It's a nasal vowel /ɛ̃/, like the 'in' in 'vin' (wine).

Q: Is 'indispensable' stronger than 'important'?

Yes, much stronger. 'Important' means it matters; 'indispensable' means you can't do without it.

上位1,500

練習する例文メモとヒント indispensable 30秒で

解説 indispensable in your Level:

At the A1 level, you can think of 'indispensable' as a very strong version of 'besoin' (need). While you mostly learn basic nouns and verbs, 'indispensable' is a great 'power word' to express that something is very important. For example, you might say 'L'eau est indispensable' (Water is essential). It helps you move beyond just saying 'J'ai besoin d'eau' (I need water) to making a general statement about life. At this level, don't worry too much about complex grammar; just use it with 'est' (is) or 'sont' (are). It's a useful word because it looks like the English word 'indispensable', making it easy to remember. Just remember that in French, we use it to talk about things we really, really need. You might use it when talking about your family, your phone, or basic needs like food and sleep. It's a way to show you have a slightly more advanced vocabulary than just using the word 'important' all the time. Practice saying it slowly: in-dis-pen-sable. The 'in' at the start is like the 'an' in 'bank' but without the 'n' sound—it's a nasal sound. Even at A1, using this word correctly will make your French sound much more natural and expressive.

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At the A2 level, you can start using 'indispensable' to describe your daily routine and requirements. You are beginning to form more complex sentences, so you can use 'indispensable' with prepositions like 'pour' (for). For example, 'Mon ordinateur est indispensable pour mon travail' (My computer is essential for my work). This allows you to explain *why* something is necessary. You can also use it to give simple advice to others: 'C'est indispensable de manger des légumes' (It is essential to eat vegetables). At this stage, you should also be aware that the word doesn't change between masculine and feminine nouns, which makes it easier to use than many other French adjectives. However, you must remember to add an 's' if you are talking about more than one thing: 'Ces outils sont indispensables'. You might encounter this word in simple advertisements or travel brochures, such as 'Les objets indispensables pour votre voyage' (Essential items for your trip). Using 'indispensable' helps you express necessity more precisely than just using 'nécessaire'. It shows you understand the difference between something you just need and something you absolutely cannot do without.

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At the B1 level, you are expected to express opinions and explain your reasons. 'Indispensable' becomes a key tool for this. You can use it in the impersonal construction 'Il est indispensable de...' followed by an infinitive. For example, 'Il est indispensable de protéger l'environnement' (It is essential to protect the environment). This is a common way to start a sentence when you are discussing social issues or giving formal advice. You should also start using it with the preposition 'à', which is often used for more abstract concepts: 'Le dialogue est indispensable à la paix' (Dialogue is essential to peace). At B1, you are also learning the subjunctive mood. 'Indispensable' is one of those adjectives that triggers the subjunctive when followed by 'que'. For example, 'Il est indispensable que nous partions maintenant' (It is essential that we leave now). Mastering this will significantly boost your grammar score. You will hear this word in news reports, workplace meetings, and more detailed conversations. It allows you to emphasize the gravity of a situation. Instead of saying something is just 'important', using 'indispensable' shows you have a nuanced grasp of the French language and can convey strong necessity effectively.

At the B2 level, you should be able to use 'indispensable' with nuance and in various registers. You might use it to describe people and their roles: 'Elle s'est rendue indispensable au sein de l'entreprise' (She made herself indispensable within the company). This implies a high level of competence and value. You can also use it to discuss complex topics like politics, philosophy, or science. For instance, 'Une presse libre est indispensable à toute démocratie' (A free press is essential to any democracy). At this level, you should be comfortable with the word's synonyms and know when to choose 'indispensable' over 'crucial', 'capital', or 'vital'. You will also encounter it in more sophisticated texts, where it might be used to describe abstract qualities or historical necessities. You should be able to use it in both written and spoken French with ease, correctly applying the subjunctive when necessary and choosing the right prepositions ('à' or 'pour') based on the context. Your ability to use 'indispensable' to build a logical argument is a hallmark of the B2 level. You are no longer just stating a need; you are justifying an absolute requirement within a complex system of ideas.

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At the C1 level, your use of 'indispensable' should be precise and stylistically appropriate. You can use it to create rhetorical effects or to emphasize a point in a formal essay or presentation. You might explore the philosophical implications of the word, such as in the phrase 'L'art est-il indispensable ?' (Is art essential?). You should be aware of the word's placement for emphasis; while it usually follows the noun or verb, placing it elsewhere can change the rhythm of your sentence. You will also recognize and use it in idiomatic expressions or more literary constructions. At this level, you understand that 'indispensable' can sometimes carry a touch of irony or hyperbole in social contexts. You are also expected to handle the subjunctive mood perfectly after 'il est indispensable que...', even with complex verbs. Your vocabulary should include related terms like 'l'indispensabilité' (the indispensability), though this is less common. You can use 'indispensable' to dissect arguments, noting where a condition is truly indispensable versus merely helpful. This level of analysis shows a deep, near-native understanding of the word's semantic range and its power to define the limits of what is possible or necessary.

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At the C2 level, you possess a native-like command of 'indispensable'. You use it with total spontaneity and can appreciate its use in the highest forms of literature and academic writing. You might use it to discuss the 'indispensable' nature of certain linguistic structures or cultural traditions. You are capable of using the word in highly nuanced ways, perhaps questioning the very notion of what is indispensable in a modern, changing world. Your use of the word is perfectly integrated into your discourse, whether you are writing a complex legal document, a philosophical treatise, or engaging in a high-level debate. You understand the subtle differences between 'indispensable', 'sine qua non' (a Latin phrase often used in French), and 'impératif'. You can use 'indispensable' to describe the intricate dependencies in complex systems, such as ecology or global economics. At this level, the word is not just a vocabulary item but a precise instrument for defining necessity at the highest level of abstraction. You can also play with the word's meaning in creative writing, using it to describe characters who strive for or reject the status of being indispensable. Your mastery is shown by the effortless way you navigate the word's grammatical requirements and its vast range of applications.

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練習する例文メモとヒント

indispensable 30秒で

Indispensable means 'absolutely necessary'. You cannot do without it.
It is an adjective that stays the same for masculine and feminine nouns.
Commonly used with prepositions 'à' (for abstract) and 'pour' (for goals).
Triggers the subjunctive mood when used in the phrase 'Il est indispensable que...'.

The French word indispensable is a powerful adjective used to describe something that is absolutely necessary, essential, or impossible to do without. It stems from the Latin indispensabilis, suggesting something that cannot be 'dispensed' with or set aside. In everyday French, it carries a weight similar to 'essential' but often implies a higher degree of necessity—if something is indispensable, the system, process, or life itself would fail or be significantly diminished without it.

Core Concept: Absolute necessity where no substitute exists.

L'eau est indispensable à la vie.

When you use this word, you are making a definitive statement about value. It is not just 'useful' (utile) or 'important' (important); it is a requirement. In a professional context, an employee might be described as indispensable if their skills are unique and vital to the company's success. In a technical sense, a part of a machine is indispensable if the machine cannot function without it. The word remains the same for both masculine and feminine nouns, making it versatile for learners.

Un bon dictionnaire est indispensable pour apprendre une langue.

Grammar Note: It is an invariable adjective regarding gender, but it takes an 's' in the plural: indispensables.

Ces outils sont indispensables pour le jardinage.

Le repos est indispensable après un long effort.

Nuance: It is stronger than 'nécessaire'. 'Nécessaire' is what you need; 'indispensable' is what you cannot exist without.

Votre aide nous est indispensable.

Using indispensable correctly involves understanding its placement and the prepositions that often follow it. Most commonly, it follows the verb être (to be). For example, 'C'est indispensable' (It is essential). When you want to specify what it is essential for, you typically use the preposition à or pour. 'À' is frequently used for abstract goals or biological needs, while 'pour' is often used for specific tasks or purposes.

Sentence Structure: [Subject] + être + indispensable + [à/pour] + [Noun/Verb].

Il est indispensable de réserver votre place à l'avance.

In formal writing, you will often see the impersonal construction 'Il est indispensable de...' followed by an infinitive verb. This is a standard way to give instructions or express requirements. For instance, 'Il est indispensable de porter un casque' (It is essential to wear a helmet). Note that in this construction, 'de' is used before the verb. If you are describing a person, you can say 'Elle se rend indispensable' (She makes herself indispensable), which implies she has become so useful that the group cannot function without her.

Ce logiciel est indispensable au bon fonctionnement du réseau.

Common Pairing: Often paired with 'absolument' for emphasis: 'absolument indispensable'.

Une connexion internet est devenue indispensable pour travailler.

Il est indispensable que vous soyez présent.

Subjunctive Alert: When followed by 'que', it triggers the subjunctive mood.

C'est un accessoire indispensable pour l'hiver.

You will encounter indispensable in a variety of settings, from professional environments to casual conversations about lifestyle. In the workplace, managers use it to describe critical tasks or key personnel. In marketing and advertising, brands frequently use it to convince consumers that their product is a 'must-have'. You'll see headlines like 'Les 10 objets indispensables pour vos vacances' (The 10 essential items for your vacation).

Professional Context: Used in performance reviews and project planning to denote critical path items.

Votre expertise est indispensable à ce projet.

In educational settings, teachers might say a certain book or concept is indispensable for passing an exam. In political discourse, leaders might argue that a certain reform is indispensable for the country's future. It is also common in scientific and medical contexts, where certain nutrients or conditions are described as indispensable for health. The word carries an air of authority and certainty, making it a favorite for persuasive speech.

La paix est indispensable au développement économique.

Media Usage: Frequently found in 'Top 10' lists and lifestyle magazines.

Ce film est indispensable pour comprendre l'histoire du cinéma.

Le sel est indispensable pour relever le goût.

Daily Life: Used when talking about personal habits or needs (e.g., coffee in the morning).

Mon café du matin est indispensable.

One of the most frequent mistakes learners make with indispensable is confusing it with the English word 'dispensable'. While they share a root, 'indispensable' means you cannot do without it, whereas 'dispensable' (less common in French as 'dispensable', more often 'superflu') means you can. Another common error is using the wrong preposition. Learners often use 'de' when they should use 'à' or 'pour' when describing the target of the necessity.

Preposition Error: Incorrect: Indispensable de la vie. Correct: Indispensable à la vie.

C'est indispensable pour réussir (Correct use of 'pour' for a goal).

Spelling is another pitfall. In English, 'indispensable' ends in '-able', and fortunately, it's the same in French. However, learners sometimes try to feminize it by adding an extra 'e' (indispensablee), which is incorrect. The word is already 'e'-ended and serves both genders. Also, remember the plural 's'. In speech, the 's' is silent, but in writing, it is mandatory when modifying a plural noun.

Ces documents sont indispensables.

Overuse: Avoid using it for trivial things unless you are being hyperbolic. If it's just 'useful', use 'utile'.

Il est indispensable de vérifier les sources.

Il est indispensable que tu viennes.

Pronunciation: The 'in' at the start is a nasal vowel /ɛ̃/. Don't pronounce the 'n' like in English.

C'est un outil indispensable.

Understanding the synonyms of indispensable helps you choose the right level of intensity for your sentence. While 'nécessaire' is the most common alternative, it is often weaker. 'Essentiel' is very close but can sometimes refer to the nature of something rather than its necessity. 'Crucial' and 'capital' are used when the success of a whole operation depends on that one thing. 'Vital' is used for things related to life or survival.

Indispensable vs. Nécessaire: Nécessaire = needed; Indispensable = cannot do without.

L'oxygène est vital (stronger than indispensable in biological terms).

In more formal or literary contexts, you might see 'requis' (required) or 'obligatoire' (mandatory). 'Requis' is often used for qualifications or conditions, while 'obligatoire' implies a rule or law. 'Fondamental' is used for base principles or building blocks. Choosing between these depends on whether you want to emphasize the logic (nécessaire), the importance (essentiel), the survival (vital), or the absolute requirement (indispensable).

C'est un élément essentiel du dossier.

Indispensable vs. Facultatif: Facultatif is the opposite; it means optional.

Cette étape est cruciale pour la suite.

Une formation adéquate est indispensable.

Summary of Intensity: Utile < Nécessaire < Essentiel < Indispensable < Vital.

C'est une ressource capitale.

How Formal Is It?

難易度

知っておくべき文法

Subjunctive mood after expressions of necessity.

Adjective agreement in number.

Impersonal constructions (Il est + adjective + de).

Prepositions following adjectives (à vs pour).

Nasal vowel pronunciation rules.

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レベル別の例文

L'eau est indispensable.

Water is essential.

Simple subject + verb + adjective.

Le soleil est indispensable.

The sun is essential.

Masculine noun with 'est'.

Manger est indispensable.

Eating is essential.

Infinitive used as a subject.

L'air est indispensable.

Air is essential.

Abstract noun as subject.

Le repos est indispensable.

Rest is essential.

Noun + est + adjective.

Un ami est indispensable.

A friend is essential.

Singular masculine noun.

Le sommeil est indispensable.

Sleep is essential.

Basic necessity.

C'est indispensable.

It is essential.

Impersonal 'C'est'.

Le passeport est indispensable pour voyager.

A passport is essential for traveling.

Use of 'pour' + infinitive.

Ce livre est indispensable pour le cours.

This book is essential for the class.

Use of 'pour' + noun.

Les vitamines sont indispensables pour la santé.

Vitamins are essential for health.

Plural agreement: 'indispensables'.

Il est indispensable de boire de l'eau.

It is essential to drink water.

Impersonal 'Il est ... de' + infinitive.

Un bon couteau est indispensable en cuisine.

A good knife is essential in the kitchen.

Contextual necessity.

Ces outils sont indispensables pour réparer le vélo.

These tools are essential for fixing the bike.

Plural noun and adjective.

Le calme est indispensable pour étudier.

Quiet is essential for studying.

Abstract noun + pour + infinitive.

Votre aide est indispensable pour finir le projet.

Your help is essential to finish the project.

Possessive adjective + noun.

Il est indispensable que vous fassiez du sport.

It is essential that you do some sport.

Triggers the subjunctive: 'fassiez'.

La confiance est indispensable à toute amitié.

Trust is essential to any friendship.

Use of 'à' for abstract connection.

Une bonne connexion est indispensable pour le télétravail.

A good connection is essential for remote work.

Modern context.

Il est indispensable de respecter les règles.

It is essential to respect the rules.

Formal advice structure.

Ce logiciel est devenu indispensable à mon quotidien.

This software has become essential to my daily life.

Verb 'devenir' + adjective.

L'éducation est indispensable au développement d'un pays.

Education is essential to a country's development.

Abstract social concept.

Il est indispensable que nous trouvions une solution.

It is essential that we find a solution.

Subjunctive mood: 'trouvions'.

Un dictionnaire est indispensable pour apprendre le français.

A dictionary is essential for learning French.

Specific goal with 'pour'.

Elle s'est rendue indispensable dans son service.

She made herself indispensable in her department.

Reflexive verb 'se rendre' + adjective.

La liberté d'expression est indispensable à la démocratie.

Freedom of expression is essential to democracy.

Political/Formal context.

Il est indispensable que le gouvernement agisse rapidement.

It is essential that the government acts quickly.

Subjunctive mood: 'agisse'.

Ces réformes sont indispensables pour l'avenir de l'économie.

These reforms are essential for the future of the economy.

Plural agreement and 'pour'.

Une formation continue est indispensable dans ce métier.

Continuous training is essential in this profession.

Professional context.

Le dialogue est indispensable pour résoudre ce conflit.

Dialogue is essential to resolve this conflict.

Problem-solving context.

Il est indispensable de prendre en compte tous les facteurs.

It is essential to take all factors into account.

Analytical context.

Votre présence est absolument indispensable à cette réunion.

Your presence is absolutely essential at this meeting.

Adverb 'absolument' for emphasis.

L'introspection est indispensable à la connaissance de soi.

Introspection is essential to self-knowledge.

Philosophical context.

Il est indispensable que l'éthique guide les avancées technologiques.

It is essential that ethics guide technological advances.

Subjunctive with abstract subject.

Cette nuance est indispensable pour saisir la pensée de l'auteur.

This nuance is essential to grasp the author's thought.

Literary analysis.

La solidarité est indispensable face aux crises mondiales.

Solidarity is essential in the face of global crises.

Societal context.

Il est indispensable de déconstruire les préjugés pour avancer.

It is essential to deconstruct prejudices to move forward.

Critical thinking context.

Une vision à long terme est indispensable pour tout dirigeant.

A long-term vision is essential for any leader.

Leadership context.

L'art, bien que non utilitaire, est indispensable à l'âme humaine.

Art, though not utilitarian, is essential to the human soul.

Concessive clause + adjective.

Il est indispensable que nous repensions notre mode de consommation.

It is essential that we rethink our consumption patterns.

Subjunctive mood: 'repensions'.

La rigueur méthodologique est indispensable à toute recherche scientifique.

Methodological rigor is essential to any scientific research.

Academic/Scientific register.

Il est indispensable que la justice soit rendue de manière impartiale.

It is essential that justice be served impartially.

Passive subjunctive: 'soit rendue'.

L'altérité est indispensable à la constitution de l'identité.

Otherness is essential to the constitution of identity.

Philosophical/Psychological register.

Une remise en question permanente est indispensable à la création.

Permanent questioning is essential to creation.

Abstract creative context.

Il est indispensable de préserver la biodiversité pour l'équilibre planétaire.

It is essential to preserve biodiversity for planetary balance.

Global ecological context.

La maîtrise de la langue est indispensable à l'exercice de la citoyenneté.

Mastery of the language is essential to the exercise of citizenship.

Civic/Political register.

Il est indispensable que s'instaure un véritable débat démocratique.

It is essential that a true democratic debate be established.

Pronominal subjunctive: 's'instaure'.

L'oubli est parfois aussi indispensable que la mémoire.

Forgetting is sometimes as essential as memory.

Comparative structure with 'aussi ... que'.

よく使う組み合わせ

absolument indispensable

outil indispensable

élément indispensable

condition indispensable

aide indispensable

personne indispensable

accessoire indispensable

ressource indispensable

étape indispensable

connaissance indispensable

よく使うフレーズ

C'est indispensable.

Il est indispensable de...

Se rendre indispensable.

Rien n'est indispensable.

Un élément indispensable du succès.

Devenir indispensable.

Juger indispensable.

Considérer comme indispensable.

Une pièce indispensable.

Un guide indispensable.

よく混同される語

indispensable vs dispensable

indispensable vs utile

indispensable vs important

慣用句と表現

"Se croire indispensable (To think one is indispensable/irreplaceable)"

"Nul n'est indispensable (No one is irreplaceable)"

"L'indispensable minimum (The bare minimum)"

"Faire le strict indispensable (To do only what is strictly necessary)"

"Un mal indispensable (A necessary evil - though 'nécessaire' is more common here)"

"Le petit indispensable (A 'must-have' item, often in fashion)"

"Indispensable au bonheur (Essential for happiness)"

"Vivre de l'indispensable (To live on only the essentials)"

"L'indispensable survie (Essential survival)"

"Un rouage indispensable (An essential cog in the machine)"

間違えやすい

indispensable vs Nécessaire

Less intense than indispensable.

indispensable vs Utile

Means 'useful', not necessarily 'essential'.

indispensable vs Vital

Usually related to life or survival specifically.

indispensable vs Essentiel

Very similar, but can refer to the core nature of something.

indispensable vs Obligatoire

Implies a legal or rule-based requirement.

文型パターン

語族

使い方

nuance

Stronger than 'nécessaire'.

formality

Suitable for all registers.

prepositions

Use 'à' for abstract/biological, 'pour' for functional.

よくある間違い

Use 'à' for abstract necessities.
Requires the subjunctive mood.
Do not add an extra 'e' for feminine nouns.
Must agree in number with plural nouns.
More natural phrasing in formal French.

ヒント

Subjunctive Trigger

Always use the subjunctive after 'Il est indispensable que...'. It's a classic exam trap!

Cognate Power

Use this word to sound more advanced with minimal effort, as it's the same in English.

Nasal Check

Don't let the 'n' or 'm' sounds slip out. Keep the vowels nasal and clean.

Hyperbole

French speakers often use it hyperbolically for things like coffee or their favorite pen.

Plural Agreement

In essays, double-check for that final 's' in plural contexts.

Emphasis

Stress the last syllable 'sable' slightly to sound more natural.

The Bread Rule

In France, bread is the 'indispensable' accompaniment to every meal.

Adverb Pairing

Listen for 'absolument' or 'totalement' before it for extra emphasis.

Workplace

Use it in job interviews to describe your skills: 'Mes compétences sont indispensables pour...'.

Necessity

Before using it, ask: 'Can I survive/succeed without this?' If no, use 'indispensable'.

暗記しよう

語源

Latin

文化的な背景

Magazines like Vogue FR often list 'les indispensables' for each season.

Bread is indispensable on a French table.

Existentialists might argue about what is truly indispensable for human freedom.

実生活で練習する

実際の使用場面

会話のきっかけ

"Quels sont les trois objets indispensables dans ton sac ?"

"Penses-tu qu'internet soit indispensable au bonheur ?"

"Quel ingrédient est indispensable dans ta cuisine ?"

"Est-il indispensable de parler plusieurs langues aujourd'hui ?"

"Quel vêtement est indispensable pour toi en hiver ?"

日記のテーマ

Décrivez une personne qui est indispensable dans votre vie.

Quelles sont les choses indispensables pour passer une bonne journée ?

Est-ce que l'art est indispensable à la société ? Pourquoi ?

Imaginez une vie sans technologie. Qu'est-ce qui deviendrait indispensable ?

Pourquoi le repos est-il indispensable pour vous ?

よくある質問

10 問