Cette page dans ta langue

English

فارسی

العربية

Deutsch

Español

日本語

한국어

Português

中文

हिन्दी

B1 adjective #35 le plus courant 17 min de lecture

unacceptable

Top 35

At the A1 level, 'unacceptable' is a very big and difficult word. You don't need to use it often. Instead, you can think of it as a very strong way to say 'not good' or 'bad.' If something is unacceptable, it means you cannot say 'yes' to it. For example, if a toy is broken when you buy it, that is unacceptable. It is not okay. You can use this word when you are very unhappy with something and you want to say it must change. It is like a big red 'X' on something. In school, if a student hits another student, the teacher will say, 'This is unacceptable.' This means the student must stop and will have a problem. It is a word for rules. When you see this word, remember it means 'No, this is not allowed.' It is a long word, but it is made of smaller parts: 'un' (not) + 'accept' (say yes) + 'able' (can). So, 'cannot say yes.'

At the A2 level, you can start to use 'unacceptable' to talk about simple rules and quality. It is more formal than 'bad.' You might use it when you are complaining about something. For example, 'The food was cold. This is unacceptable.' It shows that you are serious. You can also use it to talk about behavior. If a friend is very late, you can say, 'Being one hour late is unacceptable.' This is a strong way to set a rule. You will hear this word in movies or on the news when people are talking about things that are wrong. It is an adjective, so it usually comes after 'is' or 'was.' Remember the spelling: it has two 'c's. It is a good word to use when you want to sound more grown-up and serious about your opinions. It helps you move beyond simple words like 'bad' or 'wrong.'

As a B1 learner, you should be able to use 'unacceptable' in both speaking and writing to express strong disapproval. At this level, you can use it to describe more abstract things, like 'unacceptable behavior' or 'unacceptable conditions.' It is a key word for making complaints. Instead of just saying 'I don't like this,' saying 'This is unacceptable' makes your complaint sound more professional and valid. You can also start using adverbs to emphasize it, such as 'completely unacceptable' or 'totally unacceptable.' You will often find this word in work emails, news articles, and in discussions about social issues. It implies that a standard has not been met. For example, 'The delay in the project is unacceptable.' This shows that there is a specific expectation that was missed. It is a very useful word for expressing boundaries in a clear, firm way.

At the B2 level, you should understand the nuance of 'unacceptable' compared to words like 'unsatisfactory' or 'inappropriate.' You can use it to argue a point in an essay or a debate. For instance, 'The government's response to the crisis was unacceptable because it failed to protect the most vulnerable.' Here, you are using the word to lead into a logical explanation. You should also be comfortable with the 'It is unacceptable that...' construction, which is very common in formal English. At this level, you can use 'unacceptable' to discuss ethics, corporate responsibility, and legal standards. You should also be aware of the adverbial form 'unacceptably' and use it correctly to modify verbs or other adjectives, such as 'The room was unacceptably loud.' This level of precision shows that you have a good grasp of English word families and can adjust your tone to suit formal situations.

At the C1 level, 'unacceptable' is a tool for precise and authoritative critique. You should use it to evaluate complex situations, such as 'unacceptable levels of risk' or 'unacceptable compromises.' You understand that calling something unacceptable is a rhetorical move that places the burden of proof on the other party. You can use it in high-level business negotiations or academic critiques to dismiss an idea or a proposal firmly. You are also aware of the word's weight in different registers; you know that using it in a casual setting might be seen as overly aggressive or 'stiff.' You can use it with a wide range of collocations, such as 'socially unacceptable,' 'morally unacceptable,' or 'environmentally unacceptable.' Your use of the word is not just about disapproval, but about defining the limits of what is permissible within a specific professional or ethical framework.

For a C2 learner, 'unacceptable' is part of a sophisticated repertoire of evaluative language. You can use it with subtle irony or as part of a complex rhetorical structure. You understand its etymological roots and how it fits into the broader history of English moral and legal discourse. You can distinguish between something being 'unacceptable' in a normative sense versus a descriptive sense. In your writing, you might use it to anchor a powerful opening statement or to summarize a multifaceted argument about systemic failure. You are also sensitive to how the word's impact changes across different English-speaking cultures. You can use it in conjunction with other high-level vocabulary to create a nuanced and persuasive text. At this level, 'unacceptable' is not just a word of disapproval; it is a word that you use to define and defend the standards of your professional and intellectual world.

Entraîne-toi Exemples Notes et astuces

unacceptable en 30 secondes

Unacceptable is a strong adjective used to reject something that fails to meet standards, rules, or moral expectations in various settings.
It is commonly used in professional, academic, and social contexts to set firm boundaries and demand immediate change or improvement.
The word is more formal and authoritative than 'bad,' making it ideal for official complaints, performance reviews, and political statements.
It follows the grammatical pattern of a linking verb (is/was) and can be intensified with adverbs like 'completely' or 'wholly.'

The word unacceptable is a powerful adjective used to describe something that does not meet a required standard, is not allowed, or is considered morally or socially wrong. When you call something unacceptable, you are making a strong judgment. It is not just 'bad' or 'unpleasant'; it is something that should not be tolerated under any circumstances. In daily life, this word is often used in professional settings, schools, and in discussions about behavior or ethics. For example, if a student is consistently late to class, a teacher might say that their punctuality is unacceptable. This means the teacher will no longer allow the lateness to continue without consequences.

Standard of Quality: When a product or service is so poor that it cannot be used or paid for, it is deemed unacceptable. This applies to everything from a cold meal at a restaurant to a buggy software update.

Furthermore, the term is frequently used in the context of social justice and human rights. Activists might describe certain living conditions or laws as unacceptable because they violate basic human dignity. In these cases, the word carries a heavy emotional and moral weight, signaling that a change is mandatory. It is a word of boundaries; it defines the line between what is 'okay' and what is 'not okay.' When you use this word, you are essentially saying, 'This stops here.'

The level of pollution in the local river has reached an unacceptable level, prompting immediate government intervention.

In a professional environment, 'unacceptable' is a key term in performance reviews and project management. If a report is full of errors, a manager will label it unacceptable. This is more formal than saying 'this is a bad report.' It implies that the work fails to meet the basic requirements of the job. It is also used in legal and contractual language to describe terms that one party cannot agree to. If a contract has unfair clauses, a lawyer will state that those terms are unacceptable to their client.

Moral Boundary: In ethics, an unacceptable action is one that goes against the core values of a community, such as lying, cheating, or stealing.

People also use this word in personal relationships, though it can sound quite harsh. If a friend is repeatedly disrespectful, you might tell them their behavior is unacceptable. This sets a clear boundary. However, because the word is so formal, it can sometimes make a personal argument feel like a business meeting. In casual conversation, people might say 'that's not okay' or 'that's out of line,' but 'unacceptable' is the choice for when you want to be taken very seriously.

It is unacceptable for a company to ignore safety regulations just to save money.

The word is composed of the prefix 'un-' (meaning not), the root 'accept' (meaning to take or receive), and the suffix '-able' (meaning capable of). Therefore, it literally means 'not capable of being accepted.' This structural breakdown helps in understanding that the focus is on the impossibility of receiving or tolerating the thing being described. It is a finality; there is no room for negotiation when something is truly unacceptable.

Social Norms: Behaviors like shouting in a library or being rude to service staff are generally considered unacceptable in polite society.

In summary, 'unacceptable' is a versatile yet stern word. It bridges the gap between simple dislike and formal rejection. Whether you are talking about a cold cup of coffee, a late report, or a violation of human rights, 'unacceptable' communicates that the situation must change. It is a word of high standards and clear limits, essential for anyone looking to express strong disapproval in English.

The delay in the emergency response was unacceptable and led to many complaints.

To many citizens, the lack of transparency in the government is unacceptable.

Using the word unacceptable correctly requires an understanding of its grammatical role as an adjective. Most commonly, it follows a linking verb like 'is,' 'was,' or 'seems.' For example, 'The noise level is unacceptable.' In this structure, you are attributing the quality of being intolerable to the subject. It can also be used directly before a noun, such as in 'unacceptable behavior' or 'unacceptable risks.' This attributive use is very common in formal writing and reports.

Subjective vs. Objective: While 'unacceptable' often sounds objective, it is frequently used to express a personal or group opinion. 'I find your tone unacceptable' is a subjective statement of boundary.

One of the most effective ways to use 'unacceptable' is with adverbs of degree. Words like 'completely,' 'totally,' 'wholly,' or 'entirely' often precede 'unacceptable' to add emphasis. For instance, 'The conditions in the factory were completely unacceptable.' This intensifies the rejection. Conversely, you rarely see it used with 'a bit' or 'slightly' because the word itself implies a threshold has been crossed. If something is only 'slightly' bad, it might still be acceptable, so 'slightly unacceptable' is a bit of a contradiction.

The board of directors found the CEO's explanation for the loss unacceptable.

Another common pattern is the 'It is unacceptable + that/to' construction. For example, 'It is unacceptable that children are going hungry' or 'It is unacceptable to treat employees this way.' This is a formal way to introduce a topic of disapproval. It places the emphasis on the situation rather than the person speaking. This is very common in political speeches and official statements. It sounds authoritative and serious.

The 'Find' Construction: Using 'find' with 'unacceptable' (e.g., 'We find these terms unacceptable') is a standard way to express a formal rejection in business negotiations.

In academic writing, 'unacceptable' is used to critique theories, methodologies, or data. A researcher might write, 'The margin of error in the previous study was unacceptable, necessitating a new trial.' Here, the word is used to justify the need for further work. It provides a logical basis for rejecting previous findings. It is a precise way to say that the data does not meet the necessary scientific standards.

Such a high failure rate is unacceptable for a product in this price range.

When speaking, the stress in 'unacceptable' falls on the third syllable: un-ac-CEPT-a-ble. Emphasizing this syllable helps convey the strength of your feeling. If you say it with a flat tone, it sounds like a formal bureaucratic statement. If you put more energy into the 'CEPT,' it sounds like a personal or moral protest. Understanding this prosody is key to using the word effectively in conversation.

Negative Inversion: In very formal or poetic English, you might see 'Under no circumstances is this unacceptable behavior to be tolerated,' though this is rare.

Finally, consider the context of 'unacceptable' versus 'not acceptable.' While they mean the same thing, 'unacceptable' is a single, strong unit of meaning. 'Not acceptable' can sometimes feel a bit softer or more descriptive. 'Unacceptable' is a label; 'not acceptable' is a description of status. In most cases, 'unacceptable' is the preferred choice for clear, strong communication.

The customer service representative's rude response was deemed unacceptable by the management.

Leaving the project unfinished is simply unacceptable at this stage.

The word unacceptable is a staple of news broadcasts and political discourse. You will frequently hear news anchors or reporters using it to describe government failures, corporate scandals, or humanitarian crises. For instance, a reporter might say, 'The conditions in the refugee camp have been described as unacceptable by international observers.' In this context, the word serves as a bridge between objective reporting and the moral outrage of the community. It is a way for the media to signal that a situation is dire and requires attention.

Political Rhetoric: Politicians use 'unacceptable' to attack their opponents' policies or to show empathy with voters. 'The current rise in inflation is unacceptable,' is a common campaign line.

In the corporate world, 'unacceptable' is heard in boardrooms and during performance reviews. It is the language of accountability. If a company's quarterly earnings are far below projections, the CEO might tell the staff that the results are unacceptable. This is a call to action. It tells the employees that the status quo cannot continue. Similarly, in customer service, a manager might apologize to a client by saying, 'The way you were treated was unacceptable, and we are taking steps to fix it.' Here, it is used to validate the customer's frustration.

During the press conference, the mayor stated that the recent increase in crime was unacceptable.

You will also encounter this word in educational settings. Teachers use it to set expectations for behavior and academic integrity. A syllabus might state that 'plagiarism is unacceptable and will result in an automatic failure.' In this case, the word defines the boundaries of the academic community. It is also used when discussing the quality of work. If a student submits a paper that doesn't follow any of the instructions, the teacher might mark it as unacceptable, meaning it cannot be graded in its current form.

Legal Proceedings: Lawyers use the word to describe evidence that was obtained illegally or behavior that violates a court order.

In the world of sports, commentators and coaches use 'unacceptable' to describe poor performances or lack of effort. After a bad loss, a coach might say, 'Our lack of focus in the second half was unacceptable.' This is a way to hold the team accountable without necessarily attacking individual players. It focuses on the standard of play rather than personal failings. Fans also use it when their team is performing poorly, often shouting it from the stands or posting it on social media.

The coach told the media that the team's lack of discipline was unacceptable.

Finally, 'unacceptable' is a common word in activism and social media. When a video of an injustice goes viral, the word 'unacceptable' often trends alongside it. It serves as a collective cry for change. It is a way for people to express that they will not tolerate a certain situation any longer. Whether it's environmental destruction, police brutality, or economic inequality, 'unacceptable' is the word people use to demand a better world.

Customer Reviews: Online reviews on sites like Yelp or Amazon often use 'unacceptable' to describe products that arrived broken or services that were extremely poor.

In all these contexts, the word 'unacceptable' carries a sense of authority and finality. It is not a word for minor inconveniences; it is a word for when a line has been crossed. Hearing it usually means that a serious conversation is about to happen or that a significant change is being demanded. It is a word that commands attention and requires a response.

The long wait times at the hospital are unacceptable for patients in need of urgent care.

To many, the lack of action on climate change is unacceptable.

One of the most frequent mistakes learners make with unacceptable is confusing it with the word 'unaccepted.' While they look similar, they have different meanings. 'Unacceptable' means something is not good enough to be accepted (it *should* be rejected). 'Unaccepted' simply means something *has not been* accepted yet. For example, an 'unaccepted offer' on a house is an offer that the seller hasn't said yes to yet, but it might be a perfectly good offer. An 'unacceptable offer' is one that is so low the seller would never consider it. Mixing these up can lead to significant misunderstandings in business and legal contexts.

Unacceptable vs. Unaccepted: 'Unacceptable' is a judgment of quality or morality. 'Unaccepted' is a statement of fact regarding the status of something.

Another common error is using 'unacceptable' to describe people rather than their actions or conditions. While you can technically say 'he is unacceptable,' it sounds very dehumanizing and strange in English. It is much better to say 'his behavior is unacceptable' or 'his performance is unacceptable.' The word is best applied to things, actions, statements, or situations. When you apply it to a person, it sounds like you are rejecting their entire existence, which is usually not what is intended. Focus the criticism on the specific issue at hand.

Incorrect: He is unacceptable for this job. Correct: His lack of experience makes him unacceptable for this role.

Spelling is also a frequent stumbling block. Because the word is long, people often forget the double 'c' or the 'a' in the suffix. It is not 'unaceptable' or 'unacceptible.' A good way to remember the spelling is to break it down: un-accept-able. If you can spell 'accept,' you just need to add the prefix and the common suffix '-able.' The '-able' suffix is almost always used for adjectives derived from verbs (like 'accept'), while '-ible' is often used for words that don't have a clear English verb root (like 'credible').

Overuse: Using 'unacceptable' for minor issues (like a slightly late bus) can make you sound 'extra' or overly dramatic. Use 'annoying' or 'inconvenient' for small things.

Many learners also struggle with the preposition that follows 'unacceptable.' The correct preposition is usually 'to.' For example, 'This behavior is unacceptable to the community.' Some people mistakenly use 'for' or 'with.' While 'unacceptable for' can sometimes work (e.g., 'unacceptable for a child'), 'to' is the standard way to indicate who is doing the rejecting. 'Unacceptable with' is almost always incorrect. Paying attention to these small words will make your English sound much more natural and professional.

The terms of the peace treaty were unacceptable to both sides of the conflict.

Finally, avoid using 'unacceptable' as an adverb. As mentioned in the grammar section, you cannot say 'he spoke unacceptable.' You must use the adverbial form 'unacceptably.' This is a common mistake for speakers whose native languages use the same word for both adjectives and adverbs. In English, the distinction is crucial. 'He spoke unacceptably' describes his manner of speaking, while 'His speech was unacceptable' describes the content or quality of the speech itself.

Double Negatives: Avoid saying 'not unacceptable' unless you mean 'it's okay, but not great.' This is a double negative that can be confusing.

By being aware of these common pitfalls—confusing it with 'unaccepted,' applying it to people, misspelling it, using the wrong preposition, and using it as an adverb—you can use 'unacceptable' with confidence and precision. It is a high-impact word, and using it correctly ensures that your message of disapproval is clear and authoritative.

It is unacceptable to submit work that has been copied from the internet.

The level of noise from the construction site was unacceptable during the night hours.

While unacceptable is a great all-purpose word for rejection, sometimes you need a more specific term to convey exactly what is wrong. Understanding the nuances between 'unacceptable' and its synonyms will greatly enrich your vocabulary. For example, 'intolerable' is a stronger version of unacceptable. If something is unacceptable, you won't accept it; if it's intolerable, you literally cannot bear it any longer. It implies a high level of suffering or annoyance, such as 'intolerable heat' or 'intolerable pain.'

Unacceptable vs. Intolerable: 'Unacceptable' is often about standards and rules. 'Intolerable' is about the personal experience of being unable to endure something.

Another alternative is 'unsatisfactory.' This is a milder, more professional term. It is often used in school grades or business reports. If work is unsatisfactory, it's not good enough, but it might just need some improvements. 'Unacceptable' is more final and often implies a moral or serious failure. If a teacher says your work is unsatisfactory, they are giving you a chance to fix it. If they say it's unacceptable, you might be in trouble. 'Inadequate' is another similar word, but it specifically means 'not enough.' A budget might be inadequate, but a person's behavior is unacceptable.

The current housing situation is unacceptable, but calling it 'intolerable' emphasizes the human suffering involved.

'Inappropriate' is a very common alternative, especially regarding social behavior. If someone tells an offensive joke, it is 'inappropriate.' This means it doesn't fit the social context. 'Unacceptable' could also be used here, but 'inappropriate' is more specific to social norms and etiquette. In a workplace, 'inappropriate' is often the preferred term for HR issues. It sounds slightly less judgmental than 'unacceptable' while still being very clear that the behavior must stop.

Unacceptable vs. Inappropriate: 'Unacceptable' is a broad rejection. 'Inappropriate' specifically targets a lack of suitability for a particular time or place.

For very formal or legal contexts, you might use 'admissible' or its negative 'inadmissible.' This is specifically about whether something can be allowed in a court of law. For example, 'The evidence was deemed inadmissible.' While this is a type of being unacceptable, it is a very narrow, technical use. Similarly, 'objectionable' is a formal way to say that something causes protest or disagreement. If a movie has 'objectionable content,' it means some people will find it offensive and want it removed.

While the service was 'unsatisfactory,' the manager's refusal to help was completely unacceptable.

In casual English, people often use 'not okay,' 'out of line,' or 'not on' (common in British English). 'That's just not on!' is a very common way for a British person to say something is unacceptable. These phrases are much more common in everyday talk with friends. Using 'unacceptable' in a casual chat can make you sound like a boss or a teacher, which might not be the vibe you want. Knowing when to use the formal 'unacceptable' and when to use the casual 'not okay' is a key part of social fluency.

Unacceptable vs. Unbearable: 'Unbearable' is similar to 'intolerable' and is often used for physical sensations or extreme emotions, like 'unbearable grief.'

In summary, 'unacceptable' is your 'power word' for rejection. It is strong, formal, and clear. However, by learning synonyms like 'unsatisfactory,' 'inappropriate,' 'intolerable,' and 'inadequate,' you can be more precise in your criticism. Each of these words carries a slightly different 'flavor' of disapproval, allowing you to tailor your language to the specific situation and the person you are talking to.

The team's performance was 'inadequate' to win the game, but their lack of effort was unacceptable.

To many critics, the proposed law is unacceptable because it limits personal freedom.

How Formal Is It?

Formel

Neutre

Informel

Child friendly

Argot

Le savais-tu ?

The root 'capere' in Latin means 'to take.' So, 'accept' means 'to take to oneself,' and 'unacceptable' means 'cannot be taken to oneself.'

Guide de prononciation

UK /ˌʌn.əkˈsep.tə.bəl/

US /ˌʌn.ækˈsep.tə.bəl/

un-ac-CEPT-a-ble

Rime avec

acceptable correctable detectable selectable respectable collectable directable infectable

Erreurs fréquentes

Stressing the first syllable 'un'.
Pronouncing the 'c's as a 'k' sound only (it should be 'ak-sep').
Missing the 'a' sound in the 'able' suffix.
Pronouncing 'un' as 'oon'.
Treating it as four syllables instead of five.

Niveau de difficulté

Lecture 3/5

The word is long but common in news and formal texts.

Écriture 4/5

Spelling (double 'c') and using the correct preposition can be tricky.

Expression orale 3/5

Pronunciation is straightforward once the stress on 'cept' is learned.

Écoute 2/5

It is usually spoken clearly because it is a word of emphasis.

Quoi apprendre ensuite

Prérequis

accept able bad wrong standard

Apprends ensuite

intolerable unsatisfactory inappropriate admissible normative

Avancé

unconscionable reprehensible deplorable egregious insufferable

Grammaire à connaître

Negative Prefixes

Using 'un-' to create the opposite of 'acceptable'.

Adjective Suffixes

Using '-able' to mean 'can be' (or 'cannot be' with 'un-').

Linking Verbs

Using 'be', 'seem', or 'become' with 'unacceptable'.

Adverbs of Degree

Using 'completely', 'totally', or 'wholly' to modify the adjective.

Noun Clauses

Using 'It is unacceptable that...' followed by a full sentence.

Exemples par niveau

The broken toy is unacceptable.

Le jouet cassé est inacceptable.

Subject + is + unacceptable.

Is this bad? Yes, it is unacceptable.

Est-ce que c'est mal ? Oui, c'est inacceptable.

Simple question and answer.

Your late homework is unacceptable.

Tes devoirs en retard sont inacceptables.

Possessive adjective + noun + is + unacceptable.

Dirty water is unacceptable.

L'eau sale est inacceptable.

Adjective + noun + is + unacceptable.

It is unacceptable to hit people.

Il est inacceptable de frapper les gens.

It is unacceptable + to + verb.

The cold pizza was unacceptable.

La pizza froide était inacceptable.

Past tense 'was' used with the adjective.

This noise is unacceptable!

Ce bruit est inacceptable !

Demonstrative 'this' + noun + is + unacceptable.

Bad behavior is unacceptable in school.

Un mauvais comportement est inacceptable à l'école.

Prepositional phrase 'in school' adds context.

The waiter was rude, which is unacceptable.

Le serveur était impoli, ce qui est inacceptable.

Relative clause 'which is unacceptable' refers to the previous statement.

I think this price is unacceptable.

Je pense que ce prix est inacceptable.

I think + that clause (that is omitted).

It's unacceptable that the bus is late again.

C'est inacceptable que le bus soit encore en retard.

It's unacceptable + that + clause.

Smoking here is unacceptable.

Fumer ici est inacceptable.

Gerund 'Smoking' used as the subject.

The hotel room was dirty and unacceptable.

La chambre d'hôtel était sale et inacceptable.

Two adjectives joined by 'and'.

Your work is unacceptable; please do it again.

Votre travail est inacceptable ; veuillez le refaire.

Semicolon used to join two related sentences.

To many people, this law is unacceptable.

Pour beaucoup de gens, cette loi est inacceptable.

Prepositional phrase 'To many people' shows whose opinion it is.

The service was slow and unacceptable.

Le service était lent et inacceptable.

Compound adjective phrase.

The company's lack of safety rules is unacceptable.

Le manque de règles de sécurité de l'entreprise est inacceptable.

Complex subject 'The company's lack of safety rules'.

We find your behavior completely unacceptable.

Nous trouvons votre comportement tout à fait inacceptable.

Find + object + adjective.

It is unacceptable for a doctor to be late.

Il est inacceptable pour un médecin d'être en retard.

It is unacceptable + for someone + to do something.

The level of pollution in the city is unacceptable.

Le niveau de pollution dans la ville est inacceptable.

Noun phrase with 'of' as the subject.

This situation is unacceptable to the residents.

Cette situation est inacceptable pour les résidents.

Unacceptable + to + someone.

He gave an unacceptable excuse for his mistake.

Il a donné une excuse inacceptable pour son erreur.

Unacceptable used as an attributive adjective before a noun.

The results of the test were unacceptable.

Les résultats du test étaient inacceptables.

Plural subject 'results' with 'were'.

I will not tolerate such unacceptable language.

Je ne tolérerai pas un langage aussi inacceptable.

Such + adjective + noun.

The proposed budget cuts are wholly unacceptable.

Les coupes budgétaires proposées sont tout à fait inacceptables.

Wholly (adverb) modifies unacceptable.

It is socially unacceptable to talk loudly on a phone in a cinema.

Il est socialement inacceptable de parler fort au téléphone dans un cinéma.

Socially (adverb) specifies the type of unacceptability.

The judge ruled that the evidence was unacceptable.

Le juge a statué que la preuve était inacceptable.

Reporting verb 'ruled' followed by a 'that' clause.

The risk of failure was deemed unacceptable by the board.

Le risque d'échec a été jugé inacceptable par le conseil d'administration.

Passive voice 'was deemed'.

Such a high error rate is unacceptable in professional publishing.

Un taux d'erreur aussi élevé est inacceptable dans l'édition professionnelle.

Prepositional phrase 'in professional publishing' limits the context.

They found the working conditions to be unacceptable.

Ils ont trouvé les conditions de travail inacceptables.

Find + object + to be + adjective.

The delay in providing aid was morally unacceptable.

Le retard dans la fourniture de l'aide était moralement inacceptable.

Morally (adverb) adds an ethical dimension.

Leaving the task unfinished is simply unacceptable.

Laisser la tâche inachevée est tout simplement inacceptable.

Simply (adverb) used for emphasis.

The candidate's past comments were deemed unacceptable for a public official.

Les commentaires passés du candidat ont été jugés inacceptables pour un responsable public.

Complex noun phrase as subject.

It is unacceptable that such a wealthy nation has so many homeless citizens.

Il est inacceptable qu'une nation aussi riche compte autant de citoyens sans abri.

Expletive 'it' construction with a 'that' clause.

The environmental impact of the project was considered unacceptable.

L'impact environnemental du projet a été jugé inacceptable.

Considered (passive) + adjective.

His behavior was unacceptably aggressive during the meeting.

Son comportement était d'une agressivité inacceptable pendant la réunion.

Adverbial form 'unacceptably' modifying 'aggressive'.

The terms of the contract were fundamentally unacceptable to our legal team.

Les termes du contrat étaient fondamentalement inacceptables pour notre équipe juridique.

Fundamentally (adverb) emphasizes the core issue.

To ignore the scientific data would be unacceptable in this context.

Ignorer les données scientifiques serait inacceptable dans ce contexte.

Infinitive phrase as subject + conditional 'would be'.

The level of corruption in the department had reached an unacceptable peak.

Le niveau de corruption dans le département avait atteint un sommet inacceptable.

Past perfect 'had reached' + noun phrase.

Such systemic failures are unacceptable in a modern democracy.

De tels échecs systémiques sont inacceptables dans une démocratie moderne.

Systemic (adjective) adds complexity to the subject.

The ethical ramifications of the study were deemed unacceptable by the review board.

Les ramifications éthiques de l'étude ont été jugées inacceptables par le comité d'examen.

Ramifications (noun) used in a formal academic context.

The sheer scale of the negligence was utterly unacceptable.

L'ampleur même de la négligence était tout à fait inacceptable.

Utterly (adverb) for maximum emphasis.

It is unacceptable to predicate policy on such flimsy evidence.

Il est inacceptable de fonder une politique sur des preuves aussi fragiles.

Predicate (verb) used in a high-level intellectual context.

The lack of accountability in the financial sector is, for many, unacceptable.

Le manque de responsabilité dans le secteur financier est, pour beaucoup, inacceptable.

Parenthetical 'for many' adds nuance.

The conditions were not merely poor; they were categorically unacceptable.

Les conditions n'étaient pas seulement mauvaises ; elles étaient catégoriquement inacceptables.

Categorically (adverb) implies a definitive classification.

To remain silent in the face of such injustice is unacceptable.

Rester silencieux face à une telle injustice est inacceptable.

Gerund phrase as subject + prepositional phrase.

The proposed compromise was unacceptable to the more radical members of the party.

Le compromis proposé était inacceptable pour les membres les plus radicaux du parti.

Comparative 'more radical' adds political nuance.

The inherent bias in the algorithm makes it unacceptable for use in hiring.

Le biais inhérent à l'algorithme le rend inacceptable pour une utilisation dans le recrutement.

Inherent (adjective) and 'makes it' (causative).

Collocations courantes

completely unacceptable

totally unacceptable

wholly unacceptable

socially unacceptable

morally unacceptable

unacceptable behavior

unacceptable risk

unacceptable level

find something unacceptable

deem something unacceptable

Phrases Courantes

It is unacceptable that...

Simply unacceptable

Unacceptable to [someone]

Deemed unacceptable

Unacceptable standard

Unacceptable conditions

Unacceptable delay

Unacceptable performance

Unacceptable alternative

Unacceptable compromise

Souvent confondu avec

unacceptable vs unaccepted

Unaccepted means 'not yet accepted' (status), while unacceptable means 'not good enough to be accepted' (quality).

unacceptable vs inacceptable

This is a common misspelling or a word used in other languages (like French 'inacceptable'). In English, it is always 'unacceptable'.

unacceptable vs unsatisfactory

Unsatisfactory is milder and often implies something can be improved; unacceptable is stronger and more final.

Expressions idiomatiques

"draw the line"

To set a limit on what of behavior is acceptable. This is the action of deciding something is unacceptable.

I don't mind a joke, but I draw the line at personal insults.

Neutral

"beyond the pale"

Describes behavior that is completely unacceptable or outside the limits of social convention.

His comments about his colleagues were truly beyond the pale.

Formal/Literary

"out of order"

In British English, this describes behavior that is unacceptable or unfair.

Telling her she couldn't come to the meeting was a bit out of order.

Informal

"not the done thing"

Describes something that is socially unacceptable or not polite in a specific culture.

Wearing jeans to this formal dinner is simply not the done thing.

Neutral/British

"cross the line"

To go beyond what is considered acceptable behavior.

When he started shouting at the children, he really crossed the line.

Neutral

"a bridge too far"

An act or step that goes beyond what is acceptable or possible.

Asking for a second pay rise in one year was a bridge too far for the boss.

Neutral

"not on"

A British expression meaning something is unacceptable or not allowed.

Leaving all the washing up for me is just not on!

Informal

"the last straw"

The final unacceptable thing in a series of problems that makes someone lose their patience.

When he forgot my birthday, it was the last straw; I decided to end the relationship.

Neutral

"below the belt"

Describes a comment or action that is unfair and unacceptable, often in an argument.

Mentioning his past failures was a bit below the belt.

Informal

"not up to scratch"

Describes something that is not of an acceptable standard or quality.

The repairs on the car were not up to scratch, so I took it back.

Informal

Facile à confondre

unacceptable vs unaccepted

Similar spelling and root.

Unaccepted is a past participle used as an adjective meaning 'not received or agreed to.' Unacceptable is an adjective meaning 'not worthy of being accepted.'

His unaccepted proposal sat on the desk. His unacceptable proposal was thrown away.

unacceptable vs intolerable

Both mean 'not okay.'

Intolerable is much stronger and usually refers to physical or emotional endurance. Unacceptable is often about rules or standards.

The pain was intolerable. The late report was unacceptable.

unacceptable vs inappropriate

Both describe bad behavior.

Inappropriate means 'not suitable for the context.' Unacceptable means 'not allowed at all.'

Wearing a swimsuit to a funeral is inappropriate. Stealing from the funeral is unacceptable.

unacceptable vs inadequate

Both mean 'not good enough.'

Inadequate refers to quantity or ability (not enough). Unacceptable refers to the quality or nature of the thing.

The water supply was inadequate. The dirty water was unacceptable.

unacceptable vs unsuitable

Both mean 'not right.'

Unsuitable means 'not fitting a purpose.' Unacceptable means 'failing to meet a required standard.'

This key is unsuitable for this lock. This broken key is unacceptable.

Structures de phrases

Subject + is + unacceptable.

The food is unacceptable.

It is unacceptable to + verb.

It is unacceptable to be late.

Find + object + unacceptable.

I find your behavior unacceptable.

Adverb + unacceptable.

This is completely unacceptable.

It is unacceptable that + clause.

It is unacceptable that the price is so high.

Unacceptable + to + person.

This is unacceptable to the team.

Deem/Consider + object + unacceptable.

The board deemed the risk unacceptable.

Categorically/Fundamentally + unacceptable.

The terms are fundamentally unacceptable.

Famille de mots

Noms

Verbes

Adjectifs

Apparenté

Comment l'utiliser

frequency

Common in news, business, and education; less common in very casual daily chat.

Erreurs courantes

Using 'inacceptable' instead of 'unacceptable'. → unacceptable
In English, the prefix for this word is 'un-', not 'in-'. This is a common error for non-native speakers.
Saying 'He is unacceptable' to mean he is bad at his job. → His work is unacceptable.
Applying 'unacceptable' to a person can sound very harsh or dehumanizing. It is better to apply it to their actions or work.
Confusing 'unacceptable' with 'unaccepted'. → The offer was unacceptable (bad quality).
Unaccepted means it hasn't been accepted yet; unacceptable means it is not good enough to be accepted.
Using 'unacceptable' as an adverb (e.g., 'He acted unacceptable'). → He acted unacceptably.
You must use the adverbial form ending in '-ly' to modify a verb.
Spelling it with one 'c' (unaceptable). → unacceptable
The root word 'accept' has two 'c's, so 'unacceptable' must also have two 'c's.

Astuces

Use for Complaints

When writing a complaint letter, use 'unacceptable' to describe the service or product. It shows you are serious and expect a resolution.

Check the Preposition

Remember to use 'to' when saying who finds something unacceptable. Example: 'This is unacceptable to the board of directors.'

Vary Your Synonyms

Don't use 'unacceptable' for everything. Use 'inappropriate' for social mistakes and 'unsatisfactory' for minor quality issues.

Stress the Middle

The stress is on the 'CEPT' syllable. Practice saying 'un-ac-CEPT-a-ble' to sound more natural and emphasize your point.

Double the C

Always remember the double 'c' in the middle. Think of the word 'accept' and just add the prefix and suffix.

Formal Contexts

This word is perfect for business emails and academic papers where you need to express strong disapproval professionally.

Setting Boundaries

Use 'unacceptable' to set clear personal boundaries. Example: 'It is unacceptable for you to speak to me that way.'

News Keywords

When you hear 'unacceptable' on the news, it usually means a scandal or a major failure is being discussed.

Avoid Overuse

If you use 'unacceptable' too much, it loses its power. Save it for things that are truly not okay.

The 'Un-Accept' Rule

If you can't 'accept' it, it's 'un-acceptable'. This simple logic helps you remember the meaning and the structure.

Mémorise-le

Moyen mnémotechnique

Think of 'UN-A-CC-EPT-ABLE'. UN (Not) + A (Always) + CC (Can't) + EPT (Except) + ABLE (Able). It's not always something you can except/accept.

Association visuelle

Imagine a giant red 'X' over a picture of something bad, like a broken window or a person shouting. The 'X' represents 'unacceptable'.

Word Web

Not okay Bad quality Wrong Rules Complaint Standard Reject Tolerate

Défi

Try to find three things today that are 'unacceptable' (like a late bus or a messy room) and say the word out loud.

Origine du mot

The word is formed from the English prefix 'un-' (meaning 'not'), the verb 'accept' (from Latin 'acceptare'), and the suffix '-able' (meaning 'capable of'). It appeared in English in the late 15th century.

Sens originel : Originally, it meant 'not pleasing' or 'not welcome,' but it evolved to mean 'not capable of being accepted' in a formal or moral sense.

Indo-European (Latin roots via Old French).

Contexte culturel

Be careful when using this word about people's personal choices (like clothes or food) as it can sound very judgmental and elitist.

In the US and UK, it is a standard word for formal complaints and setting workplace boundaries.

The phrase 'This is unacceptable!' is a common trope for angry bosses in movies. Human rights reports frequently use the word to describe global crises. Lemongrab from 'Adventure Time' famously screams 'UNACCEPTABLE!'

Pratique dans la vie réelle

Contextes réels

Customer Service

This service is unacceptable.
I find this delay unacceptable.
An unacceptable standard of care.
I want to report an unacceptable incident.

Workplace

Your performance is unacceptable.
Unacceptable workplace behavior.
The conditions are unacceptable.
This error is unacceptable.

School

Plagiarism is unacceptable.
Unacceptable conduct in class.
Your grade is unacceptable.
Late work is unacceptable.

Politics/News

The level of poverty is unacceptable.
An unacceptable violation of rights.
The government's failure is unacceptable.
Unacceptable environmental damage.

Personal Relationships

Your tone is unacceptable.
That behavior is unacceptable to me.
I find your excuses unacceptable.
This is an unacceptable way to treat a friend.

Amorces de conversation

"Do you think the current level of plastic waste in the ocean is unacceptable?"

"What is one thing that you find completely unacceptable in a professional environment?"

"Have you ever had to tell someone that their behavior was unacceptable?"

"Is it unacceptable for a boss to call an employee after work hours?"

"What kind of service would you consider unacceptable at a five-star hotel?"

Sujets d'écriture

Describe a time when you received unacceptable service. How did you handle the situation and what was the outcome?

Write about a social issue that you find unacceptable. What steps do you think should be taken to fix it?

Reflect on your own standards. What is something you used to accept but now find unacceptable?

How do you distinguish between something that is just 'bad' and something that is truly 'unacceptable'?

Imagine you are a manager. How would you tell an employee that their work is unacceptable without being too mean?

Questions fréquentes

10 questions

It is not a 'swear word' or inherently rude, but it is very strong and firm. Using it can make you sound angry or very serious. In a professional setting, it is considered a clear way to express disapproval, but in a personal setting, it might sound a bit harsh or cold.

While people will understand you, it is more common to use adverbs like 'completely,' 'totally,' or 'wholly' with unacceptable. Because unacceptable is an 'absolute' adjective (something is either acceptable or it isn't), 'very' sounds a bit strange to native speakers.

They mean the same thing, but 'unacceptable' is a single, stronger word. 'Not acceptable' is more descriptive and slightly less formal. 'Unacceptable' is often used as a final judgment or a label for a situation.

The adverb form is 'unacceptably.' You change the '-le' at the end to '-ly.' For example: 'He behaved unacceptably.' It is used to describe how an action was performed.

It is better to use it for a person's actions, behavior, or work. Saying 'He is unacceptable' sounds like you are rejecting the person themselves, which is very strong and potentially dehumanizing. Instead, say 'His behavior is unacceptable.'

No, in English, the correct word is 'unacceptable.' 'Inacceptable' is a common mistake made by speakers of Romance languages like French or Spanish, where the prefix 'in-' is used.

Use 'unsatisfactory' when something is just below the required standard but isn't necessarily a moral failure or a huge problem. It's common in school reports and performance reviews where there is room for improvement.

Common collocations include 'unacceptable behavior,' 'unacceptable risk,' 'completely unacceptable,' 'socially unacceptable,' and 'unacceptable level.' These pairs are very frequently used together in English.

It is used equally in both. However, British English speakers might also use the informal phrase 'not on' to mean the same thing in casual conversation.

The direct opposite is 'acceptable.' Other opposites include 'satisfactory,' 'permissible,' and 'adequate,' depending on the context of the situation.