Acknowledgements or Acknowledgments: Which Spelling Is

Both acknowledgements and acknowledgments are correct spellings. The difference is mainly based on English variety: acknowledgments is the standard spelling in American English, while acknowledgements is more common in British English and some other varieties. The meaning is the same.

If you are writing for a U.S. audience, acknowledgments is usually the better choice. You may see the longer form, acknowledgements, in British publications, academic writing, books, and websites from countries that follow British English conventions.

The difference comes from the spelling of the base word acknowledgment/acknowledgement. American English commonly drops the extra e before the m, while British English often keeps it. This guide explains both spellings, when to use each one, common mistakes, examples, pronunciation, and simple ways to remember the difference.

Quick Answer: Acknowledgements or Acknowledgments?

Acknowledgments is the preferred spelling in American English, while acknowledgements is the preferred spelling in British English. Both words have the same meaning and are grammatically correct.

Here is the simple rule:

English variety	Preferred spelling
American English	acknowledgments
British English	acknowledgements
Canadian English	acknowledgements is common
Australian English	acknowledgements is common
Meaning	The same

For your U.S.-focused writing, use acknowledgments.

For example:

The author included a short acknowledgments section at the end of the book.

In British English, you may see:

The author included a short acknowledgements section at the end of the book.

Neither version changes the meaning. The important thing is to choose one spelling based on the English style you are following and use it consistently.

An acknowledgment is an expression of recognition, thanks, or appreciation. It can refer to thanking someone for help, recognizing someone’s contribution, or confirming that something has been received or noticed.

For example, an author may write an acknowledgment to thank people who helped with a book.

A student may include acknowledgments in a research project to thank a teacher, supervisor, classmates, or family members.

The word can also have meanings beyond expressing thanks. In some situations, an acknowledgment means recognizing that something is true or confirming that something has been received.

For example:

We received an acknowledgment of your application.

Here, the word means confirmation that the application was received.

Another example is:

His statement was an acknowledgment of the problem.

In this sentence, the word means recognition of the problem.

So, although people often see acknowledgment in a thank-you section, the word has a broader meaning.

What Is the Difference Between Acknowledgements and Acknowledgments?

There is no difference in meaning between acknowledgements and acknowledgments.

The difference is spelling.

American English generally uses acknowledgment, with no e after the g:

acknowledgment
acknowledgments

British English commonly uses acknowledgement, with an e:

acknowledgement
acknowledgements

The same spelling pattern applies to the plural forms.

Singular	Plural	Common usage
acknowledgment	acknowledgments	American English
acknowledgement	acknowledgements	British English

This is a spelling difference, not a grammar difference.

If you write acknowledgments in an American English article, that is correct. If you write acknowledgements in British English, that is also correct.

The key is consistency.

Acknowledgments in American English

For a U.S. audience, acknowledgments is the standard spelling you should normally choose.

American English often removes the extra e in words ending in -gment when compared with British variants.

For example:

acknowledgment
acknowledgment section
acknowledgments page

You might see this spelling in American books, academic papers, business documents, websites, and other professional writing.

For example:

I would like to thank everyone mentioned in the acknowledgments.

Or:

The author included several personal acknowledgments at the end of the book.

If your website is written in simple USA English, acknowledgments is the better choice for your main spelling.

Acknowledgements is commonly used in British English.

It has an extra e:

acknowledgement
acknowledgements

This spelling is common in British books, academic publications, newspapers, and websites.

For example:

The author thanked her research team in the acknowledgements.

A British publisher may use acknowledgements throughout a book even though an American publisher would likely use acknowledgments.

The extra e does not make the word more formal or more correct. It simply reflects a different spelling convention.

Why Does American English Use Acknowledgments?

American English has developed several spelling preferences that differ from British English. In some words, American spelling tends to use a shorter form.

One familiar example is:

judgment

British English often uses:

judgement

The pattern is similar to:

acknowledgment
acknowledgement

American English generally prefers the shorter spelling acknowledgment.

This does not mean the longer British spelling is wrong. It simply means that American and British English have different spelling standards in some cases.

English is a global language, so different countries have developed their own accepted spelling conventions. These differences are normal.

Acknowledgements or Acknowledgments in Academic Writing

Both spellings can appear in academic writing, depending on the style and country.

In an American college or university paper, acknowledgments is usually the safer choice when following American English.

An academic book might have a section titled:

Acknowledgments

This section may thank professors, research assistants, institutions, editors, publishers, family members, or others who helped with the work.

For example:

Acknowledgments
I would like to thank my professor for her guidance throughout this research project.

In British academic writing, the heading may instead be:

Acknowledgements

The important point is to follow the spelling style required by your school, publisher, journal, or organization.

Acknowledgments or Acknowledgements in Books

Authors often use this word as the title of a section near the beginning or end of a book.

An American book may have:

Acknowledgments

A British book may have:

Acknowledgements

The section usually allows the author to thank people who contributed to the project.

For example, an author might thank:

• Editors
• Researchers
• Publishers
• Teachers
• Colleagues
• Friends
• Family members
• Organizations
• Readers or supporters

The exact content depends on the book and the author’s preferences.

If you are writing a book for an American publisher, Acknowledgments is generally the appropriate heading.

Acknowledgment vs. Acknowledgement

The singular forms follow the same regional spelling difference.

Acknowledgment is preferred in American English.

Acknowledgement is common in British English.

Both mean the same thing.

American English	British English
acknowledgment	acknowledgement
acknowledgments	acknowledgements

Examples:

American English:

She received an acknowledgment from the company.

British English:

She received an acknowledgement from the company.

Both sentences are correct.

The only difference is the spelling of the word.

Is Acknowledgments a Plural Word?

Yes. Acknowledgments is the plural form of acknowledgment.

The singular form refers to one acknowledgment:

The letter included an acknowledgment of his contribution.

The plural form refers to multiple acknowledgments:

The book contains several acknowledgments.

Likewise, in British English:

acknowledgement → acknowledgements

For example:

The author wrote several acknowledgements to the people who helped with the project.

When referring to a book’s thank-you section, the plural form acknowledgments is very common in American English.

Common Mistakes With Acknowledgments and Acknowledgements

One common mistake is thinking that one spelling is correct and the other is always wrong. That is not true.

Both acknowledgments and acknowledgements are accepted spellings. The main difference is regional English.

Another mistake is mixing styles in the same document.

For example, if your entire article uses American spellings, it is better to use:

acknowledgment

rather than switching between:

acknowledgment
acknowledgement

Consistency makes your writing look more polished.

Another common mistake is adding or removing letters incorrectly. The correct forms are:

acknowledgment
acknowledgments

or:

acknowledgement
acknowledgements

Do not write forms such as acknowledgementss or acknowledgmment.

Acknowledgments or Acknowledgements in the United States

If you are writing specifically for readers in the United States, choose acknowledgments.

This is especially useful when writing:

• Blog articles
• School assignments
• American business documents
• U.S. academic papers
• Book manuscripts for U.S. publishers
• Website content for American readers

For example:

The research paper includes acknowledgments for everyone who helped collect the data.

That spelling fits standard American English.

If you are unsure which style your audience expects, check the publication’s style guide. Some universities, publishers, and organizations have their own preferences.

Acknowledgments or Acknowledgements in the UK

If you are writing for a British audience, acknowledgements is generally the better choice.

For example:

The author included acknowledgements for the research team.

British English has many spelling differences from American English. Some are small, such as the extra e in this word, while others are more noticeable.

The important lesson is not that one version is better. Instead, match your spelling to your intended audience.

Real-Life Examples

Seeing both spellings in complete sentences makes the difference easier to understand.

American English Examples

The book’s acknowledgments appear at the end.

She wrote a heartfelt acknowledgment to her mentor.

The research paper includes acknowledgments for the university staff.

We received an acknowledgment that our application had been received.

British English Examples

The book’s acknowledgements appear at the end.

She wrote a heartfelt acknowledgement to her mentor.

The research paper includes acknowledgements for the university staff.

We received an acknowledgement that our application had been received.

Notice that the meaning stays exactly the same.

How to Remember the Difference

A simple way to remember the spelling is to connect acknowledgments with American English.

Think:

USA → acknowledgment

The American version drops the extra e:

acknowledgment

The British version keeps it:

acknowledgement

You do not need to memorize a complicated grammar rule. Just remember that the difference is mainly regional.

If your website follows USA English, use:

acknowledgment

and:

acknowledgments

If your website follows British English, use:

acknowledgement

and:

acknowledgements

Which Spelling Should You Use?

The best spelling depends on your audience.

However, choosing one style and using it consistently is usually better than switching between them.If you are writing for an American audience, use acknowledgments.

If you are writing for a British audience, acknowledgements is the more common spelling.

If you are writing for an international audience, either spelling is acceptable, but it is best to choose one style and use it consistently.

Situation	Best choice
U.S. website	acknowledgments
U.S. school assignment	acknowledgments
British website	acknowledgements
British academic writing	acknowledgements
American book	acknowledgments
British book	acknowledgements
Mixed international audience	Choose one style and stay consistent

For a website that follows simple USA English, I recommend acknowledgments.

Both spellings remain in use today. The difference has not disappeared simply because English is becoming more global.

Digital writing makes it easy for readers to encounter both forms. An American reader may see acknowledgments on one website and acknowledgements on another. Both can be correct.

What matters most in professional writing is consistency and audience awareness.

If you are creating content for U.S. readers, use American spelling throughout your article. This helps your writing match the language expectations of your audience.

For example, if you choose American English, you may also prefer forms such as color rather than colour and favorite rather than favourite.

You do not need to change the spelling simply because you see another version online.

Acknowledgments vs. Acknowledgements: Final Comparison

The difference can be summarized very simply.

Acknowledgments is the preferred American English spelling.

Acknowledgements is commonly preferred in British English and some other varieties.

Both forms have the same meaning. Both are grammatically correct. Neither one is a mistake when used according to the appropriate regional spelling style.

If you are writing for an American audience, choose acknowledgments.

If you are writing for a British audience, choose acknowledgements.

The most important rule is consistency. Once you choose your English variety, continue using that spelling throughout the document.

FAQs About Acknowledgements or Acknowledgments

Is acknowledgment or acknowledgement correct?

Both are correct. Acknowledgment is the preferred spelling in American English, while acknowledgement is common in British English.

Is acknowledgments American or British?

Acknowledgments is the standard American English spelling. British English commonly uses acknowledgements with an extra e.

Should I use acknowledgments in American English?

Yes. If you are writing in American English, acknowledgments is the preferred spelling. This applies to both general writing and sections in books or academic work.

Is acknowledgements wrong in the USA?

No. Americans can understand acknowledgements, and the spelling is not inherently incorrect. However, acknowledgments is generally preferred when following standard American English.

What is the plural of acknowledgment?

The plural is acknowledgments in American English. In British English, the plural is commonly spelled acknowledgements.

Which spelling should I use in a book?

Use the spelling that matches your publisher’s or target audience’s English style. For an American book, Acknowledgments is generally the best choice. For a British book, Acknowledgements is common.

Conclusion

When choosing between acknowledgements or acknowledgments, remember that both spellings are correct. The main difference is regional. Acknowledgments is the preferred American English spelling, while acknowledgements is common in British English and some other English varieties.

If you are writing for a U.S. audience, especially for an American website, school assignment, or book, acknowledgments is the best choice. If your readers use British English, acknowledgements is appropriate.

The meaning does not change when you add or remove the extra e. What matters is choosing the spelling that fits your audience and using it consistently.So, if your goal is simple USA English, remember the answer: acknowledgments. Once you know this small spelling difference, choosing the correct form becomes easy.