Esta página en tu idioma

English

فارسی

العربية

Deutsch

Français

日本語

한국어

Português

中文

हिन्दी

B1 adjective #2,000 más común 10 min de lectura

efficace

Top 2,000

Practícalo Ejemplos Notas y consejos efficace en 30 segundos

Explicación efficace in your Level:

At the A1 level, 'efficace' is a very useful word to describe things that work well. You can use it simply with the verb 'être' (to be). For example, 'C'est efficace' (It is effective). You might use it to talk about a medicine that makes you feel better or a simple tool. It is an easy adjective because it doesn't change for boys or girls (masculine or feminine). You just need to remember to add an 's' if you are talking about more than one thing. Think of it as a way to say 'it works' or 'it is good at its job'. It is a positive word. You will hear it in shops or when people talk about their daily routines. It's a great word to add to your basic vocabulary because it helps you express satisfaction with how something functions. Even at this early stage, using 'efficace' makes you sound more precise than just saying 'c'est bien'.

Regístrate gratis para leer la explicación completa

At the A2 level, you can start using 'efficace' to describe people and methods in addition to objects. You might say 'Ma méthode pour apprendre le français est efficace' (My method for learning French is effective). You are beginning to understand that 'efficace' is about getting a result. You can also use it in simple comparisons: 'Ce médicament est plus efficace que l'autre' (This medicine is more effective than the other). At this level, you should practice using it with common nouns like 'travail', 'solution', and 'médicament'. It's a word that helps you give your opinion on the utility of things. You will also notice it in advertisements on the street or on TV. It's a key word for describing your skills in a simple way, like saying 'Je suis efficace dans mon travail'. This shows you are confident and capable.

Regístrate gratis para leer la explicación completa

At the B1 level, you should be comfortable using 'efficace' in a variety of contexts, especially professional and social ones. You understand the nuance that 'efficace' implies both doing something well and achieving the desired outcome. You can use it to discuss more abstract concepts like 'une communication efficace' or 'une stratégie efficace'. You should also be aware of the noun form, 'l'efficacité'. At this level, you might start to compare 'efficace' with other adjectives like 'utile' or 'rapide'. You are able to explain why something is efficace: 'C'est efficace parce que ça gagne du temps' (It's effective because it saves time). This word is essential for the B1 speaking exam (DELF), where you often have to give your opinion on a problem and suggest solutions. Describing a solution as 'efficace' is a strong way to support your argument.

At the B2 level, you are expected to use 'efficace' with precision and to understand its synonyms and antonyms. You can distinguish between 'efficace' (achieving the result) and 'efficient' (optimizing resources), even though 'efficace' is often used for both in casual speech. You can use it in more complex sentence structures, such as 'Bien que cette mesure soit efficace, elle est impopulaire' (Although this measure is effective, it is unpopular). You also recognize its use in formal registers, such as in business reports or academic texts. You should be able to discuss the 'manque d'efficacité' (lack of effectiveness) of certain systems or policies. At this level, 'efficace' becomes a tool for critical analysis. You might also use related words like 'efficacement' (effectively) to describe how an action is performed. Your vocabulary is becoming more nuanced, and you can choose 'efficace' over 'bon' or 'bien' to sound more professional.

Regístrate gratis para leer la explicación completa

At the C1 level, you use 'efficace' and its derivatives with total ease, recognizing the subtle stylistic choices between 'efficace', 'performant', 'opérant', and 'probant'. You understand the philosophical and technical implications of 'l'efficacité' in modern society. You can use the word in idiomatic ways and understand its role in different registers—from the punchy language of marketing to the dry, precise language of scientific research. You are capable of debating the ethics of efficiency: 'L'efficacité doit-elle primer sur l'aspect humain ?' (Should efficiency take precedence over the human aspect?). You can also use 'efficace' to describe the impact of a literary work or a piece of art, meaning it successfully evokes the intended emotion or message. Your mastery of the word allows you to use it not just as a descriptor, but as a concept to be explored and challenged in sophisticated discourse.

Regístrate gratis para leer la explicación completa

At the C2 level, 'efficace' is a word you can manipulate to express the finest shades of meaning. You are aware of its etymological roots and how its meaning has evolved in the context of industrialization and the digital age. You can use it in high-level academic writing, perhaps discussing the 'efficacité systémique' or 'l'efficacité symbolique'. You understand the difference between 'efficacité' and 'efficience' in economic theory and can use both correctly in a professional or academic setting. You can also appreciate the word's use in classical literature versus modern business French. At this level, you might use 'efficace' to critique a complex system, analyzing whether its effectiveness is merely superficial or deeply structural. You are a master of the word's connotations and can use it to persuade, analyze, and describe with the precision of a native speaker, often using it in conjunction with advanced rhetorical devices.

Regístrate gratis para leer la explicación completa

Practícalo Ejemplos Notas y consejos

efficace en 30 segundos

Efficace means effective or efficient, describing something that produces the desired result with precision and minimal waste in various contexts.
It is an adjective that remains the same for both masculine and feminine singular nouns, making it easy for learners to use correctly.
Commonly used in professional, medical, and everyday settings to praise productivity, the potency of a remedy, or the utility of a tool.
While similar to 'efficient' and 'performant', 'efficace' is the most versatile term for general success and achievement of specific goals.

The French adjective efficace is a cornerstone of both professional and everyday language, denoting the ability of a person, method, or object to produce the intended result with precision and minimal waste. Unlike English, which often distinguishes between 'effective' (doing the right things) and 'efficient' (doing things right), the French efficace frequently bridges both concepts, though it leans heavily toward the successful attainment of a goal.

Core Concept: At its heart, being efficace means that the energy, time, or resources invested are directly translated into a tangible, positive outcome. It is the opposite of 'vain' (futile) or 'inutile' (useless).

Ce nouveau vaccin est extrêmement efficace contre le virus.

Example: Medical efficacy.

In a professional context, an employé efficace is someone who manages their tasks without procrastination, ensuring that every action contributes to the company's objectives. This term is highly valued in French corporate culture, where 'l'efficacité' is often cited in performance reviews. It suggests a blend of competence, speed, and reliability. When applied to a tool, like a software or a kitchen gadget, it implies that the tool performs its function perfectly.

Une gestion du temps efficace permet de réduire le stress.

Semantic Range: The word covers mechanical efficiency, medicinal potency, and personal productivity. It is a versatile 'power word' in the French vocabulary.

Le filtre est efficace pour purifier l'eau.

Historically, the word stems from the Latin efficax, which relates to the power to produce effects. In modern French, this heritage is preserved; when you say something is efficace, you are literally saying it has the 'power to effect change'. This is why it is used so frequently in advertising—'un produit efficace' is the ultimate promise to a consumer. It implies a guarantee of results.

Elle a trouvé une solution efficace à ce problème complexe.

Synonym Nuance: While 'efficient' exists in French, it is often used in more technical or economic contexts. 'Efficace' remains the standard choice for general success.

Un discours efficace doit être court et percutant.

To be truly efficace, one must balance speed with quality. It is not just about finishing a task quickly, but about finishing it in a way that no further correction is needed. This word embodies the French ideal of 'le travail bien fait' (well-done work) but with a modern emphasis on output and results. Whether you are talking about a cleaning product, a law, or a study method, efficace is the gold standard for performance.

Using efficace correctly involves understanding its placement and the nouns it typically modifies. As an adjective, it usually follows the noun it describes, which is the standard position for most French adjectives that provide a specific quality or classification.

Placement: Noun + Efficace: 'Une méthode efficace'. Placing it before the noun ('Une efficace méthode') is rare and usually reserved for poetic or highly stylized literary contexts.

Nous cherchons un moyen efficace de communiquer.

When describing people, efficace is a high compliment. It suggests that the person is a 'doer'. You can say 'Il est très efficace' (He is very efficient/effective). In this context, it is often paired with adverbs of degree like 'très' (very), 'particulièrement' (particularly), or 'incroyablement' (incredibly). It is important to note that while 'efficace' is positive, calling someone 'trop efficace' (too efficient) can sometimes imply they are robotic or lack a human touch, though this is rare.

Elle est l'assistante la plus efficace que j'aie jamais eue.

Plural Form: Simply add an 's' for the plural: 'Des solutions efficaces'. The pronunciation remains the same.

Ces mesures sont efficaces pour réduire la pollution.

In technical writing, efficace is used to describe the performance of systems. For example, 'un moteur efficace' or 'un algorithme efficace'. Here, it specifically refers to the ratio of output to input. If you are writing a CV or a cover letter in French, efficace is a 'power verb' equivalent. Use it to describe your work style or the results you achieved in previous roles. Phrases like 'mise en œuvre efficace' (effective implementation) are very common in business reports.

Le système de chauffage est très efficace en hiver.

Comparative/Superlative: Use 'plus efficace que' (more effective than) and 'le/la plus efficace' (the most effective).

C'est la méthode la plus efficace pour apprendre le français.

Finally, in everyday conversation, you might use efficace to describe a simple life hack. If someone shows you a better way to fold laundry or organize your fridge, you can simply say 'Ah, c'est efficace !'. It’s a versatile way to acknowledge that something works well. It’s a word that conveys satisfaction and approval of functionality.

You will encounter efficace in almost every sector of French life, from the doctor's office to the nightly news. Its frequency in the French language is high because it serves as a definitive judgment on the utility of things and actions.

In Advertising: Commercials for detergents, medications, and beauty products constantly use 'efficace' to promise results. 'Efficace dès la première utilisation' (Effective from the first use) is a classic marketing slogan.

Publicité : Un dentifrice efficace pour des dents blanches.

In the workplace, managers use it to evaluate projects. You'll hear 'Est-ce que cette stratégie est vraiment efficace ?' (Is this strategy really effective?). It’s a word that demands evidence. In French schools, teachers might comment on a student's 'travail efficace', meaning the student is not just busy, but actually making progress. It is a word of pragmatism.

Le manager demande un rapport efficace et concis.

In Science & Medicine: Medical journals and health news discuss 'l'efficacité d'un traitement'. It is the standard term for clinical efficacy.

Les scientifiques testent l'aspect efficace de la molécule.

On the news, journalists often report on 'des mesures efficaces' taken by the government to combat inflation or unemployment. It is a word that conveys a sense of action and resolution. If you watch French YouTube channels about productivity or 'développement personnel', you will hear 'efficace' in every video, as the goal is always to become 'plus efficace' in one's daily life.

Le JT parle d'une intervention efficace des pompiers.

In Sports: Commentators describe a player's performance as 'efficace' when they score goals or make key plays without unnecessary flair.

L'attaquant a été très efficace devant le but.

In summary, efficace is everywhere because the French value results and practicality. Whether it's a 'remède de grand-mère' (grandmother's remedy) or a high-tech solution, if it works, it is efficace.

While efficace is a relatively straightforward word, English speakers often stumble over its nuances and its relationship with similar-sounding words in both languages.

Mistake 1: Efficace vs. Efficient: In English, 'efficient' usually means doing something without wasting time or energy. In French, 'efficace' covers both 'effective' and 'efficient'. However, 'efficient' (the French word) exists but is more specialized, often referring to a person's ability to produce a result with the least resources. Using 'efficient' in French when you mean 'it works' is a common anglicism.

Incorrect: Ce plan est très efficient. (Use 'efficace' unless talking about resource optimization).

Another common error is gender agreement. Because efficace ends in 'e', many learners think they need to change it for feminine nouns, but it remains the same. The mistake usually happens in the plural, where learners forget the 's'. Always remember: 'un homme efficace', 'une femme efficace', 'des outils efficaces'.

Correct: Elles sont très efficaces dans leur travail.

Mistake 2: Confusing with 'Effectif': Saying 'une méthode effective' is a direct translation of 'an effective method' but in French, 'effective' means 'real' or 'actual'. You must use 'efficace'.

Faux ami: La réduction est effective dès demain. (This means the reduction starts tomorrow, not that it is 'effective' in the sense of working well).

Learners also sometimes use 'efficace' when they should use 'performant'. While similar, 'performant' is often used for high-tech machinery or athletes to describe high-level performance, whereas 'efficace' is more about the result itself. If a car is 'efficace', it gets you there. If it is 'performante', it is fast and powerful.

Nuance: Un ordinateur performant vs une aide efficace.

Pronunciation Trap: Be careful with the 'cc'. It is pronounced like 'ks' (e-fi-kas). Some learners try to pronounce it like 'ss' or 'ch'.

Prononciation : /e.fi.kas/

Lastly, avoid overusing the word. While it is common, French stylists often suggest more precise alternatives like 'probant' (for evidence), 'opérant' (for a mechanism), or 'fructueux' (for a meeting). However, for a B1-B2 learner, efficace is almost always a safe and correct choice.

To truly master efficace, you should understand the words that surround it in the semantic field of success and productivity. French has several synonyms, each with a specific flavor.

Efficient: Often confused with 'efficace', 'efficient' in French specifically refers to the optimization of resources (time, money, energy) to achieve a result. It is more technical.

Comparaison : Une machine efficiente consomme peu d'énergie.

Performant is another close relative. It describes someone or something that achieves high levels of performance, often in competition or against a standard. An athlete is 'performant'; a method is 'efficace'. If a company is 'performante', it is leading the market. If its internal processes are 'efficaces', they work without hitches.

L'entreprise est devenue plus performante après la fusion.

Productif: This focuses on the quantity of output. A 'journée productive' is one where you got a lot done. A 'méthode efficace' is one that ensured what you did was correct.

Il a eu une réunion très productive ce matin.

Probant is used for evidence or arguments. If a proof is 'probante', it is convincing and effective in proving a point. Fructueux (fruitful) is used for discussions, collaborations, or searches that yield positive results. 'Des recherches fructueuses' led to a discovery. Utile (useful) is the most basic version; everything that is 'efficace' is 'utile', but not everything 'utile' is necessarily 'efficace' (it might be useful but slow or weak).

Les preuves sont probantes et le suspect a avoué.

Souverain: In a slightly more formal or old-fashioned sense, a 'remède souverain' is one that is infallibly effective.

Le repos est un remède souverain contre la fatigue.

Understanding these distinctions allows you to choose the exact word for the situation. While efficace is your 'Swiss Army knife' word, knowing when to use 'performant' or 'productif' will make your French sound much more natural and sophisticated.

How Formal Is It?

Nivel de dificultad

Gramática que debes saber

Adjective agreement

Adjective placement

Comparatives and Superlatives

Adverb formation (-ment)

Subjunctive after 'il est important que...'

Regístrate gratis para leer la explicación completa

Ejemplos por nivel

Ce stylo est très efficace.

This pen is very effective.

Simple adjective use.

Le savon est efficace.

The soap is effective.

Masculine noun + adjective.

C'est une aide efficace.

It is an effective help.

Feminine noun + adjective (no change).

Le remède est efficace.

The remedy is effective.

Common noun.

Ils sont efficaces.

They are effective.

Plural form (add -s).

La méthode est efficace.

The method is effective.

Feminine noun.

C'est un outil efficace.

It is an effective tool.

Noun + adjective.

Tu es très efficace !

You are very effective!

Direct address.

Elle a trouvé une solution efficace.

She found an effective solution.

Past tense with adjective.

Ce plan de travail est efficace.

This work plan is effective.

Compound noun phrase.

Le nouveau professeur est efficace.

The new teacher is effective.

Describing a person's skill.

Ces exercices sont efficaces pour le dos.

These exercises are effective for the back.

Plural agreement.

Il n'est pas très efficace ce matin.

He is not very effective this morning.

Negation.

C'est une manière efficace de ranger.

It's an effective way to tidy up.

Infinitive construction.

Le filtre à eau est très efficace.

The water filter is very effective.

Technical object.

Nous voulons un résultat efficace.

We want an effective result.

Direct object.

Il faut être efficace pour finir à l'heure.

One must be effective to finish on time.

Impersonal 'il faut'.

Cette publicité est très efficace sur les jeunes.

This ad is very effective on young people.

Preposition 'sur'.

L'organisation de l'événement était efficace.

The organization of the event was effective.

Abstract noun subject.

Elle travaille de manière efficace.

She works in an effective manner.

Adverbial phrase 'de manière...'.

Le gouvernement cherche des mesures efficaces.

The government is looking for effective measures.

Political context.

C'est un moyen efficace de réduire les coûts.

It's an effective way to reduce costs.

Economic context.

Le traitement s'est révélé efficace.

The treatment proved to be effective.

Pronominal verb 'se révéler'.

Votre présentation était courte et efficace.

Your presentation was short and effective.

Pairing adjectives.

L'efficacité de ce système est remise en question.

The effectiveness of this system is being questioned.

Noun form 'efficacité'.

Il a agi avec une efficacité redoutable.

He acted with formidable effectiveness.

Noun + adjective 'redoutable'.

Cette loi n'est pas assez efficace contre la fraude.

This law is not effective enough against fraud.

Adverb 'assez'.

Une gestion efficace des ressources est cruciale.

Effective resource management is crucial.

Formal business French.

Elle a su rester efficace malgré la pression.

She managed to stay effective despite the pressure.

Conjunction 'malgré'.

Le marketing viral est souvent très efficace.

Viral marketing is often very effective.

Modern business term.

Il est plus efficace de déléguer certaines tâches.

It is more effective to delegate certain tasks.

Comparative structure.

L'isolation thermique est efficace pour économiser l'énergie.

Thermal insulation is effective for saving energy.

Technical/Environmental context.

L'efficacité opérationnelle est au cœur de notre stratégie.

Operational efficiency is at the heart of our strategy.

High-level business jargon.

Le plaidoyer de l'avocat fut particulièrement efficace.

The lawyer's plea was particularly effective.

Formal register 'fut'.

On peut douter de l'aspect efficace de cette réforme.

One may doubt the effective aspect of this reform.

Subtle critique.

Il s'agit d'une réponse efficace aux défis climatiques.

It is an effective response to climate challenges.

Global issues context.

L'efficacité symbolique du rituel est indéniable.

The symbolic effectiveness of the ritual is undeniable.

Sociological/Anthropological context.

Il a optimisé ses processus pour être plus efficace.

He optimized his processes to be more effective.

Focus on optimization.

Cette approche s'avère plus efficace sur le long terme.

This approach proves to be more effective in the long term.

Temporal nuance.

L'efficacité d'un tel dispositif reste à prouver.

The effectiveness of such a device remains to be proven.

Skeptical tone.

L'impératif d'efficacité ne doit pas occulter l'éthique.

The imperative of efficiency must not overshadow ethics.

Philosophical debate.

L'efficacité redoutable de sa rhétorique a convaincu l'assemblée.

The formidable effectiveness of his rhetoric convinced the assembly.

Sophisticated vocabulary.

Il convient d'analyser l'efficacité marginale de cet investissement.

It is appropriate to analyze the marginal effectiveness of this investment.

Economic analysis.

L'efficacité du système repose sur une confiance mutuelle.

The effectiveness of the system rests on mutual trust.

Structural analysis.

Sa mise en scène, sobre mais efficace, servait le texte.

His staging, sober but effective, served the text.

Artistic criticism.

L'efficacité de la bureaucratie est souvent un oxymore.

The efficiency of bureaucracy is often an oxymoron.

Irony and advanced rhetoric.

On assiste à une quête effrénée d'efficacité individuelle.

We are witnessing a frantic quest for individual efficiency.

Social commentary.

L'efficacité de la molécule a été validée par des tests en double aveugle.

The efficacy of the molecule was validated by double-blind tests.

Scientific precision.

Sinónimos

efficient performant utile productif opérant

Antónimos

inefficace inutile stérile

Colocaciones comunes

méthode efficace

remède efficace

travail efficace

solution efficace

système efficace

moyen efficace

traitement efficace

mesure efficace

communication efficace

gestion efficace

Frases Comunes

être efficace

rendre efficace

de manière efficace

manque d'efficacité

preuve d'efficacité

gain d'efficacité

recherche d'efficacité

peu efficace

redoutablement efficace

efficace à 100%

Se confunde a menudo con

efficace vs effectif

efficace vs efficient

efficace vs efficience

Modismos y expresiones

"aller à l'essentiel"

"faire mouche"

"joindre l'utile à l'agréable"

"droit au but"

"bras de fer"

"mener à bien"

"porter ses fruits"

"avoir du punch"

"être d'attaque"

"mettre le paquet"

Fácil de confundir

efficace vs Effectif

efficace vs Efficient

efficace vs Affable

Patrones de oraciones

Regístrate gratis para ver todos los ejemplos

Cómo usarlo

nuance

Covers both 'effective' and 'efficient' in English.

formality

Neutral, suitable for all contexts.

Errores comunes

Consejos

Use it in CVs

When writing a French CV, use 'efficace' to describe your skills. It shows you are result-oriented and productive.

Plural Agreement

Always remember the 's' for plural nouns. 'Des solutions efficaces' is a common mistake for beginners who forget the agreement.

The 'KS' Sound

Practice saying 'e-fi-kas'. Don't let the double 'c' confuse you into a 'ch' or 's' sound.

Medical Context

In a pharmacy, if you want to know if a medicine works well, ask: 'Est-ce que ce médicament est efficace ?'

Avoid 'Bon'

Instead of saying 'C'est une bonne méthode', say 'C'est une méthode efficace'. It sounds much more professional and precise.

Efficace vs Efficient

Use 'efficace' for the result and 'efficient' for the process/resources. Most of the time, 'efficace' is what you want.

Commercials

Watch French TV ads for cleaning products. You will hear 'efficace' repeated many times to drill the meaning into your head.

Giving Feedback

If a colleague helps you, say 'Merci, c'est très efficace !' to acknowledge their help and productivity.

Adverbial Use

Don't forget 'efficacement'. It's a great way to describe actions. 'Il gère son temps efficacement'.

English Cognate

Link it to 'Efficacy'. If you know that word in English, 'efficace' is easy to remember as its direct cousin.

Memorízalo

Mnemotecnia

EFFort + I + CAse = EFFICACE (The effort in this case worked!)

Origen de la palabra

Latin

Contexto cultural

Highly valued in CVs.

Standard term for drug potency.

Often used to judge government action.

Practica en la vida real

Contextos reales

Inicios de conversación

"Quelle est ta méthode la plus efficace pour apprendre le français ?"

"Est-ce que tu penses que le télétravail est plus efficace ?"

"Quel est le remède le plus efficace contre le rhume selon toi ?"

"Comment peut-on être plus efficace le matin ?"

"Est-ce qu'une punition est efficace pour éduquer un enfant ?"

Temas para diario

Décrivez une journée où vous avez été particulièrement efficace.

Quelle application trouvez-vous la plus efficace pour votre organisation ?

Réfléchissez à une solution efficace pour réduire votre stress.

Le succès dépend-il uniquement de l'efficacité ?

Décrivez un outil efficace que vous utilisez tous les jours.

Preguntas frecuentes

10 preguntas

No, 'efficace' already ends in 'e', so it stays the same for both masculine and feminine singular nouns. You only add an 's' for plural.

In French, 'efficace' is the general word for 'effective'. 'Efficient' is more technical and refers to achieving a result with the least amount of resources or waste.

Yes, it is a common compliment for someone who works well and gets things done quickly and correctly.

The adverb is 'efficacement'. For example: 'Il travaille efficacement' (He works effectively).

It is neutral. It can be used in a casual conversation with friends or in a very formal business report or scientific paper.

The most common opposite is 'inefficace'. You can also use 'inutile' (useless) or 'vain' (futile) depending on the context.

Not usually for taste, but you could say a diet is 'efficace' or a specific food is 'efficace' for health or energy.

It is pronounced like 'ks', similar to the 'x' in 'taxi'. The IPA is /e.fi.kas/.

Yes, to describe a player who scores or defends well without wasting energy. 'Un attaquant efficace'.

The noun is 'l'efficacité' (feminine), which means effectiveness or efficiency.

Regístrate gratis para ver consejos y notas