Formal Language in English: Rules, Examples and Practice

Formal language in English is a polite, careful and professional style of communication. We use it in situations where we want to sound respectful, serious, accurate and well organised.

For many English learners, formal English can feel difficult at first. Everyday English is often relaxed, friendly and direct, while formal English usually follows different rules of tone, vocabulary, grammar and sentence structure.

You may need formal language when you are:

• writing essays, reports or proposals
• sending professional emails
• applying for a job
• writing a letter of complaint
• giving a presentation
• speaking to a manager, teacher, examiner or official person
• preparing for Cambridge exams such as B2 First or C1 Advanced

In this lesson, you will learn how to make your English sound more formal, polite and professional without sounding old-fashioned or unnatural.

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What is formal language in English?

Formal language is a style of English used in serious, academic, professional or official situations. It is usually more polite, more precise and less conversational than informal English.

Compare these examples:

Informal: I’m writing to ask about the job.

Formal: I am writing to enquire about the position.

Informal: We need to find out what caused the problem.

Formal: We need to determine the cause of the problem.

Informal: The meeting was put off.

Formal: The meeting was postponed.

Formal English is not simply “difficult English”. Good formal English should be clear, natural and easy to understand.

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Informal vs Formal English

Here is a quick comparison:

more relaxed	more serious and professional
uses contractions	usually avoids contractions
often uses phrasal verbs	often uses one-word verbs
may include slang	avoids slang
sounds personal and direct	sounds more objective
common in conversation	common in essays, reports and official emails

Both styles are useful. The important thing is to choose the right style for the situation.

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1. Use full forms instead of contractions

One of the easiest ways to make your English more formal is to avoid contractions.

In informal English, we often use:

• isn’t
• can’t
• don’t
• she’s
• we’ll
• they’ve

In formal English, it is usually better to write the full forms:

• is not
• cannot
• do not
• she is
• we will
• they have

Examples:

Informal: She couldn’t attend the meeting.

Formal: She could not attend the meeting.

Informal: We don’t have enough information.

Formal: We do not have sufficient information.

This small change immediately makes your writing sound more careful and professional.

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2. Avoid slang and very casual expressions

Slang is common in everyday conversation, but it usually sounds inappropriate in formal writing.

Examples:

Informal: The presentation was a total mess.

Formal: The presentation was poorly organised.

Informal: The guy was really angry.

Formal: The man was extremely angry.

Informal: The film was awesome.

Formal: The film was highly impressive.

In formal English, try to sound clear, calm and precise. Slang may make your writing sound too casual or immature.

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3. Replace phrasal verbs with more formal alternatives

Phrasal verbs are very common in spoken English, but formal writing often uses more formal one-word verbs.

Informal phrasal verb	Formal alternative
find out	discover / determine
put off	postpone
look into	investigate
deal with	address / handle
come up with	devise / develop
go up	increase
go down	decrease
point out	indicate
get rid of	eliminate
bring up	mention / raise

Examples:

Informal: We need to look into this problem.

Formal: This problem needs to be investigated.

Informal: The company came up with a new plan.

Formal: The company developed a new strategy.

Informal: Prices went up last year.

Formal: Prices increased last year.

This does not mean phrasal verbs are wrong. They are very natural in everyday English. However, in essays, reports and formal emails, one-word verbs often sound more professional.

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4. Choose precise vocabulary

Formal English often uses vocabulary that is more exact and less emotional.

Compare these pairs:

Less formal	More formal
help	assist
get	obtain / receive
buy	purchase
enough	sufficient
about	regarding / concerning
fix	repair / resolve
keep	retain
show	demonstrate
need	require
ask for	request
tell	inform
start	commence / begin

Examples:

Informal: We need to get more information about the problem.

Formal: We need to obtain more information regarding the problem.

Informal: Please tell us if you need help.

Formal: Please inform us if you require assistance.

Be careful, though. Formal English should not sound ridiculous. If every sentence sounds as if it was written by a dusty Victorian lawyer, you have probably gone too far.

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5. Use a polite and neutral tone

Formal English should sound respectful and controlled. Avoid dramatic, aggressive or emotional language.

Examples:

Informal: This idea is ridiculous and will never work.

Formal: This proposal appears impractical and is unlikely to succeed.

Informal: You made a big mistake.

Formal: There appears to have been an error.

Informal: I want you to reply immediately.

Formal: I would appreciate a prompt response.

A polite tone is especially important in professional emails, complaints, job applications and exam writing tasks.

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6. Avoid being too personal

In many formal contexts, especially academic writing, it is better to avoid very personal expressions such as:

• I think
• I believe
• in my opinion
• we can see
• you can see

Instead, try to make your writing sound more objective.

Examples:

Less formal: I think this policy is ineffective.

Formal: This policy appears to be ineffective.

Less formal: We can clearly see that the results are poor.

Formal: The results clearly indicate a problem.

Less formal: In my opinion, the government should act quickly.

Formal: It could be argued that the government should act quickly.

This is very useful in Cambridge essays, reports and proposals.

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7. Use cautious language when necessary

Formal English often avoids sounding too absolute. Instead of making very strong claims, we often use cautious or “hedging” language.

Useful phrases include:

• appears to
• seems to
• tends to
• may
• might
• could
• is likely to
• it could be argued that
• to some extent

Examples:

Too direct: This method always works.

More formal: This method appears to be effective in many cases.

Too strong: Social media is bad for young people.

More formal: Social media may have negative effects on young people.

This kind of language is especially useful in academic writing because it makes your arguments sound balanced and mature.

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8. Use formal linking words

Formal writing needs clear organisation. Linking words help you connect ideas logically.

Instead of simple connectors such as so, but and also, you can use more formal alternatives.

Informal	Formal
so	therefore / consequently
but	however / nevertheless
also	moreover / furthermore / in addition
because	since / as / due to the fact that
then	subsequently
for example	for instance
in the end	ultimately

Examples:

Informal: The road was closed, so we returned home.

Formal: The road was closed; therefore, we returned home.

Informal: The plan was expensive, but it was successful.

Formal: The plan was expensive; however, it was successful.

Formal linking words make your writing sound more organised and polished.

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9. Build more carefully structured sentences

Informal English often uses short, simple sentences. Formal English often connects ideas more smoothly.

Informal:

• The company lost money. It changed its strategy. It wanted better results.

Formal:

• After suffering financial losses, the company changed its strategy in order to achieve better results.

Informal:

• Many people work from home now. This gives them more flexibility.

Formal:

• Working from home gives many employees greater flexibility.

This does not mean every formal sentence should be long. In fact, very long sentences can become confusing. The goal is not to write more words, but to connect ideas clearly.

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10. Avoid conversational questions in formal writing

Formal writing is usually less chatty than informal writing.

Informal:

• So what can we do about this problem?

Formal:

• The question, therefore, is how this problem can be addressed.

Informal:

• Let’s now look at the main reasons.

Formal:

• The main reasons will now be examined.

This is particularly useful in essays and reports.

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11. Use passive structures when appropriate

The passive voice is often used in formal English because it focuses on the action rather than the person doing the action.

Examples:

Active: The manager rejected the proposal.

Passive: The proposal was rejected.

Active: Someone has made a mistake.

Passive: A mistake has been made.

Active: The researchers carried out the study in 2024.

Passive: The study was carried out in 2024.

However, do not overuse the passive. Good formal writing should still be clear and natural.

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12. Use noun phrases to sound more formal

Formal English often uses noun phrases instead of simple verb phrases.

Examples:

Less formal: The company decided to expand.

More formal: The company made a decision to expand.

Less formal: We need to improve the system.

More formal: There is a need for improvement in the system.

Less formal: The number of visitors increased.

More formal: There was an increase in the number of visitors.

This structure is common in academic and professional writing.

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13. Avoid vague words

Words such as thing, stuff, nice, bad, big and good are often too vague for formal writing.

Try to choose more specific words.

Examples:

Informal: This is a bad problem.

Formal: This is a serious issue.

Informal: The course was good.

Formal: The course was highly effective.

Informal: They discussed a lot of things.

Formal: They discussed several important issues.

Precise vocabulary makes your writing stronger and clearer.

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14. Match the formality to the situation

Not all formal English is the same. A job application, an academic essay and a polite email may all require formal language, but they are not identical.

For example:

Formal email:

• I would be grateful if you could send me further information.

Academic essay:

• It could be argued that education plays a significant role in social development.

Job application:

• I am writing to apply for the position of sales assistant.

Good writers adjust their language according to the reader, the purpose and the situation.

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Formal language in emails

Here are some useful formal email phrases:

Less formal	More formal
Hi	Dear Mr Smith / Dear Ms Brown
I want to ask about	I am writing to enquire about
Can you send me…?	Could you please send me…?
Sorry for the delay	Please accept my apologies for the delay
Thanks	Thank you for your assistance
I need	I would be grateful if you could
See you soon	I look forward to hearing from you

Example:

Less formal:

Hi, can you send me more details about the course?

More formal:

Dear Sir or Madam,

I am writing to enquire about your English course. I would be grateful if you could send me further details.

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Formal language in Cambridge exams

Formal language is especially useful in Cambridge B2 First and C1 Advanced writing tasks.

You may need it for:

• essays
• reports
• proposals
• formal emails
• letters of application

In these tasks, examiners look for clear organisation, appropriate tone, accurate grammar and a good range of vocabulary.

Useful formal phrases for Cambridge writing:

• It is widely believed that…
• One possible solution would be to…
• The main advantage of this approach is…
• This issue should be considered carefully.
• The evidence suggests that…
• It could be argued that…
• There are several reasons why…
• In conclusion, it is clear that…

Example:

Less formal:

• I think schools should teach students more practical skills.

More formal:

• It could be argued that schools should place greater emphasis on practical skills.

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Quick comparison: informal vs formal English

Here are more examples:

Informal	Formal
I’m writing to ask about the job.	I am writing to enquire about the position.
We need to find out what happened.	We need to determine what occurred.
They put off the meeting.	They postponed the meeting.
The results were really bad.	The results were extremely disappointing.
Please get back to me soon.	I would appreciate a prompt response.
The plan didn’t work.	The plan was unsuccessful.
I think this is a good idea.	This appears to be a suitable proposal.
Lots of people agree.	Many people support this view.
The company got bigger.	The company expanded.
We talked about the problem.	We discussed the issue.

Common mistakes learners make with formal language

1. Using difficult words unnecessarily

Formal English should be clear. Do not use complicated words just to sound clever.

Poor style:

• The aforementioned individual proceeded to utilise the educational establishment.

Better:

• The student used the school facilities.

2. Mixing formal and informal language

Avoid writing one formal sentence and then suddenly using slang.

Mixed style:

• The proposal was carefully considered, but honestly, it was a total mess.

Better:

• The proposal was carefully considered; however, it was poorly organised.

3. Using contractions in formal writing

In essays, reports and official emails, avoid contractions such as don’t, can’t and I’m.

4. Being too emotional

Formal writing should sound balanced.

Too emotional:

• This is a terrible idea and nobody should support it.

Better:

• This proposal has several serious disadvantages and may not be suitable.

5. Thinking formal English must sound old-fashioned

Formal English should sound professional, not ancient. You do not need to write like Shakespeare’s solicitor.

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Final thoughts

Formal language in English is an essential skill for advanced learners. It helps you write better essays, send more professional emails, perform well in Cambridge exams and communicate respectfully in serious situations.

The key is balance. Formal English should be polite, accurate and well organised, but it should still sound natural. You do not need to use the most difficult word in the dictionary. You simply need to choose the right tone for the right situation.

The more you practise changing informal sentences into formal ones, the more flexible your English will become.

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FAQ: Formal Language in English

What is formal language in English?

Formal language in English is a polite, professional and careful style used in serious, academic or official situations. It is common in essays, reports, job applications, formal emails and presentations.

When should I use formal English?

You should use formal English when writing to someone you do not know well, applying for a job, writing academic work, preparing official documents or completing formal exam tasks.

What is the difference between formal and informal English?

Formal English is more serious, polite and precise. Informal English is more relaxed, personal and conversational.

Are phrasal verbs informal?

Many phrasal verbs are more common in informal English. In formal writing, one-word verbs such as postpone, investigate, determine and discuss are often preferred.

Is formal English always better?

No. Formal English is better in professional, academic and official situations. Informal English is more suitable for friends, family and relaxed everyday conversation.

How can I improve my formal English?

You can improve your formal English by reading essays, reports and professional emails, learning formal vocabulary, avoiding slang and practising rewriting informal sentences in a more formal style.

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Subjunctive and Formal Expressions in English

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How to Write an Essay for C1 Advanced

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