Acknowledgment or Acknowledgement are two different spellings of the same word in English. Acknowledgment is preferred in American English, while acknowledgement is commonly used in British English.

The noun is usually uncountable, though a plural form can appear in certain contexts. An acknowledgment can mean the act of recognizing or admitting the existence, truth, or validity of something. A written or spoken statement can express gratitude or appreciation for something received or done. The two forms share the same meaning and can be used interchangeably according to audience and writing style.

An exception is acknowelgements, which is not a correct spelling. Use acknowledgment or acknowledgement in a thesis, dissertation, or academic section. Your choice often reflects regional usage or personal preference. Keep the chosen form consistent throughout a document. Formal writing should use the appropriate word and form for its intended audience.

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Acknowledgment or Acknowledgement: Quick Answer

Acknowledgment and acknowledgement are both correct spellings.

However, if you’re writing in American English, use “acknowledgment.” If you’re following British English, “acknowledgement” is a common and accepted choice.

Spelling	Correct?	Preferred use
Acknowledgment	Yes	American English
Acknowledgement	Yes	British English and other varieties
Acknowledgments	Yes	American English plural
Acknowledgements	Yes	British English plural

Merriam-Webster gives acknowledgment as the main entry and identifies acknowledgement as a variant. Oxford also lists acknowledgment and acknowledgement as alternatives.

So, if you’re writing for an American audience, the safest choice is simple:

Use “acknowledgment.”

There’s no need to treat acknowledgement as an outright error, though. It’s a legitimate spelling.

What Does Acknowledgment Mean?

Acknowledgment is a noun formed from the verb acknowledge. It generally refers to recognizing, accepting, noticing, thanking, or confirming something.

Merriam-Webster gives several related meanings, including recognizing something or someone, expressing recognition for an achievement, recognizing something received, and a specialized legal meaning.

The exact meaning depends on context.

Acknowledgment as Recognition

Sometimes an acknowledgment simply means recognizing that something exists, happened, or is true.

For example:

The report contains an acknowledgment of the problem.
Her apology included an acknowledgment of her mistake.
His silence wasn’t an acknowledgment of guilt.

Here, the word doesn’t necessarily mean “thank you.” It means recognizing or accepting something.

Oxford similarly defines the noun as an act of accepting that something exists or is true.

Acknowledgment as Thanks

The word can also describe an expression of gratitude.

Consider this sentence:

The researcher included an acknowledgment of her colleagues’ assistance.

In this context, the writer recognizes people who provided help.

This meaning appears frequently in books, academic papers, dissertations, reports, and other formal publications.

Acknowledgment as Confirmation

There’s another useful meaning that appears in business and professional communication.

An acknowledgment can confirm that someone received something.

For example:

We sent an acknowledgment of your application.
Please wait for an acknowledgment of receipt.
The company issued an acknowledgment after receiving the documents.

Oxford specifically includes a letter or email confirming receipt as one meaning of acknowledgment.

Acknowledgment in Legal Language

Legal writing uses the word in a more specialized way.

An acknowledgment can refer to a formal declaration or admission that gives legal validity to an act or fact. Merriam-Webster includes this legal sense in its definition.

That’s quite different from writing a friendly thank-you note.

Context does the heavy lifting.

Why Are There Two Spellings?

The difference between acknowledgment and acknowledgement largely reflects regional spelling conventions.

American and British English don’t always spell the same words identically. Think about familiar pairs such as:

color / colour
favorite / favourite
center / centre
traveling / travelling
judgment / judgement

The same general pattern appears with acknowledgment / acknowledgement.

American English generally favors the shorter acknowledgment, while British English commonly uses acknowledgement.

The extra e doesn’t change the word’s basic meaning. It doesn’t create a different grammatical form either.

It’s simply a spelling variation.

Why Does “Acknowledgement” Have an Extra E?

The longer spelling reflects a spelling tradition in which the e remains before the suffix -ment.

American English often prefers the shorter form acknowledgment.

This doesn’t mean American English systematically removes every such e. English spelling has plenty of exceptions and historical quirks. Language isn’t an engineering blueprint with every component following the same specification.

That’s why it’s better to learn established patterns rather than inventing a rule that applies to every word.

Acknowledgment vs. Acknowledgement in American English

If you’re writing in the United States, acknowledgment is the better default.

That applies to most forms of American writing, including:

School assignments
College essays
Research papers
Business documents
Websites
Books
Reports
Professional emails
Resumes and professional materials
Formal correspondence

The Modern Language Association provides especially clear guidance here. MLA publications generally follow Merriam-Webster’s spelling preferences and use acknowledgment, not acknowledgement, when the two appear as variants.

Is “Acknowledgement” Wrong in American English?

Not necessarily.

That’s an important distinction.

A spelling can be less preferred without being incorrect.

Merriam-Webster lists acknowledgement as a variant of acknowledgment. Oxford’s American dictionary also lists both forms.

So an American editor might change:

Acknowledgement

to:

Acknowledgment

But that edit doesn’t mean the original writer used a nonexistent English word.

It means the editor is applying a particular spelling preference.

Acknowledgment vs. Acknowledgement in British English

British English commonly uses acknowledgement.

For a British audience, you may naturally encounter sentences such as:

The author included a page of acknowledgements.

A British publisher may also prefer:

We received an acknowledgement of your application.

That spelling fits the broader British spelling system.

However, acknowledgment isn’t incomprehensible or inherently wrong in British contexts. English spelling traditions overlap considerably across regions.

Oxford’s learner’s dictionary lists acknowledgement and gives acknowledgment as another form.

The practical lesson is simple: follow the spelling system required by your audience or publication.

Acknowledgment vs. Acknowledgement: Side-by-Side Comparison

Here’s the distinction at a glance:

Feature	Acknowledgment	Acknowledgement
Meaning	Same	Same
Pronunciation	Same	Same
Part of speech	Noun	Noun
Extra “e”	No	Yes
US English	Preferred	Accepted variant
British English	Used	Common
Singular	acknowledgment	acknowledgement
Plural	acknowledgments	acknowledgements
Spelling error?	No	No
Core difference	Regional/style preference	Regional/style preference

The important point is that the extra e doesn’t change the meaning.

If someone writes acknowledgement instead of acknowledgment, the reader doesn’t suddenly interpret the word differently.

How to Use “Acknowledgment” in a Sentence

The word appears in several distinct contexts. Understanding those uses makes the spelling easier to remember.

Acknowledgment Meaning Recognition

The manager gave an acknowledgment of the team’s hard work.

Here, the noun describes recognition.

Another example:

The report included an acknowledgment of the project’s limitations.

The writer recognizes a fact rather than thanking someone.

Acknowledgment Meaning Gratitude

The author included an acknowledgment thanking her editor.

This usage is common in books and academic publications.

A more natural example would be:

The author wrote a brief acknowledgment to everyone who helped with the research.

Acknowledgment Meaning Receipt

We received an acknowledgment of your application.

Here, the word means confirmation that something arrived.

That’s why you may see phrases such as:

acknowledgment of receipt
written acknowledgment
receipt acknowledgment
acknowledgment letter

Oxford lists this receipt-confirmation meaning separately from recognition and thanks.

Acknowledgment Meaning Admission

The noun can also describe accepting a fact, mistake, responsibility, or problem.

His acknowledgment of the mistake helped rebuild trust.

This meaning connects directly to the verb acknowledge.

Acknowledgment Examples in American English

If you’re writing in US English, these examples show the preferred form:

The book contains an acknowledgment section.
We received an acknowledgment of your application.
She offered an acknowledgment of his contribution.
His acknowledgment of the problem surprised everyone.
The report includes an acknowledgment of the project’s limitations.
The team received public acknowledgment for its work.
Please send an acknowledgment when you receive the documents.
The author expressed her gratitude in the acknowledgments.

Notice something important: acknowledgment can describe recognition, gratitude, admission, or confirmation.

The surrounding words tell you which meaning applies.

Acknowledgement Examples in British English

The same sentences can use the British spelling:

The book contains an acknowledgement section.
We received an acknowledgement of your application.
She offered an acknowledgement of his contribution.
His acknowledgement of the problem surprised everyone.
The report includes an acknowledgement of the project’s limitations.
The team received public acknowledgement for its work.
Please send an acknowledgement when you receive the documents.
The author expressed her gratitude in the acknowledgements.

The meaning remains unchanged.

Only the spelling preference differs.

Acknowledgment or Acknowledgement in a Book?

This question comes up frequently because books often contain a dedicated section for thanking contributors.

In American English, the heading is usually:

Acknowledgments

In British English, you’ll commonly see:

Acknowledgements

An acknowledgment section may recognize people who contributed to a project without being listed as authors.

For example, an author might thank:

Editors
Researchers
Publishers
Agents
Colleagues
Interview participants
Institutions
Friends
Family members
Financial supporters

Merriam-Webster gives acknowledgments as the plural form and notes acknowledgements as the variant.

Acknowledgment vs. Dedication

Don’t confuse an acknowledgment with a dedication.

Acknowledgment	Dedication
Thanks people who helped	Honors someone
Can contain many names	Usually focuses on one person or a small group
Often several paragraphs	Usually very short
May mention professional assistance	Often has a personal or emotional tone
Common in academic and professional books	Common in books of many types

For example:

Dedication: For Mom, who taught me to keep asking questions.

That’s a dedication.

By contrast:

Acknowledgments: Thanks to my editor, research assistant, colleagues, and everyone who reviewed early drafts.

That’s an acknowledgment section.

Acknowledgment in Academic Writing

Academic writing uses acknowledgment in several meaningful ways.

A thesis or dissertation may include an acknowledgment section that recognizes people who provided:

Research assistance
Funding
Editorial support
Laboratory access
Data
Mentorship
Technical assistance
Institutional support

The section isn’t merely decorative. It gives readers useful context about the work behind the finished research.

For example:

The author gratefully acknowledges the assistance of the Department of Biology and the research team.

In American academic writing, acknowledgment is the preferred spelling.

MLA specifically says its publications use acknowledgment rather than acknowledgement when the spellings are variants.

Acknowledgment in Business Writing

Professional communication uses the word in a slightly different way.

Consider this sentence:

We are writing to confirm acknowledgment of your application.

That’s understandable, but a simpler sentence often works better:

We confirm receipt of your application.

Good business writing doesn’t use a longer word merely because it sounds formal.

Still, acknowledgment remains useful when the noun itself is important:

You will receive an acknowledgment after we process your application.

This tells the reader that a confirmation message will follow.

Acknowledgment vs. Recognition: What’s the Difference?

These words overlap, but they aren’t interchangeable in every sentence.

Acknowledgment often emphasizes accepting, noticing, or confirming something.

Recognition can emphasize appreciating someone’s achievement or identifying something as valid or important.

Compare:

The report included an acknowledgment of the error.

The writer admits or recognizes that the error exists.

Now compare:

The scientist received recognition for her research.

Here, the focus falls on honor or appreciation.

Merriam-Webster lists recognition and favorable notice among the meanings associated with acknowledgment.

The two words can overlap, but context gives each one its particular flavor.

Acknowledgment vs. Admission

Acknowledgment can sometimes mean accepting a fact. Admission often carries a stronger sense of conceding something, especially something unfavorable.

Compare:

His acknowledgment of the problem was encouraging.

This sounds fairly neutral.

Now:

His admission that he had lied shocked the team.

The second sentence carries more emotional weight.

Oxford explains that acknowledge can mean accepting that something is true, while admit often carries a stronger sense of conceding a fact.

That’s a subtle distinction, but it matters in polished writing.

Acknowledgment, Acknowledged, Acknowledging, and Acknowledge

Understanding the word family can help you avoid other mistakes.

Word	Part of speech	Example
acknowledge	Verb	She acknowledged the mistake.
acknowledged	Verb/adjective	He acknowledged the problem.
acknowledging	Verb form	She is acknowledging the contribution.
acknowledgment	Noun	The report contains an acknowledgment.
acknowledgement	Noun variant	The report contains an acknowledgement.

The verb acknowledge can mean accepting that something is true, recognizing someone’s status, confirming receipt, noticing someone, or expressing thanks. Oxford identifies these several uses in its dictionary entry.

That explains why the noun can appear in such different situations.

How to Pronounce Acknowledgment

Both spellings have essentially the same pronunciation.

A common pronunciation is approximately:

ack-NOL-ij-ment

Merriam-Webster gives the pronunciation as /ik-ˈnä-lij-mənt/.

The extra e in acknowledgement doesn’t create an extra syllable.

So you don’t pronounce the two forms differently simply because one contains another letter.

That’s one reason the spelling difference can feel so strange: your ear can’t help you choose between them.

Common Mistakes With Acknowledgment and Acknowledgement

Assuming “Acknowledgement” Is Always Wrong

This is the biggest misconception.

Acknowledgement is a valid spelling.

Merriam-Webster explicitly lists it as a variant. Oxford does the same.

Assuming “Acknowledgment” Is the Only Correct Form Everywhere

That’s the opposite mistake.

American English strongly favors acknowledgment, but British English commonly uses acknowledgement.

Language has regional standards.

Mixing the Spellings in One Document

Suppose an American report contains:

Acknowledgment of Sources

Later, it says:

The authors would like to express their acknowledgements.

That inconsistency looks careless.

Choose one spelling and stick with it.

Letting Spellcheck Make the Decision for You

Spellcheckers aren’t always the final authority.

MLA points out that writers should consult dictionaries because automated spelling tools don’t always provide the contextual guidance needed for word choice and spelling variants.

Your software’s language setting matters, too.

A US English setting may prefer acknowledgment. A British English setting may accept or favor acknowledgement.

A Simple Case Study: Choosing the Right Spelling

Imagine an American university student writing a thesis.

The thesis contains a section thanking professors, research assistants, and funding organizations.

The student has two choices:

Acknowledgments
Acknowledgements

Which should appear as the heading?

Best choice for US English

Acknowledgments

Why?

The document uses American English.
American dictionaries prefer the shorter form.
MLA uses acknowledgment when choosing between these variants.
The spelling should remain consistent throughout the thesis.

Now imagine a British publisher preparing the same type of book.

Acknowledgements would be a natural choice.

The underlying meaning hasn’t changed. The editorial convention has.

Which Spelling Should You Use?

Here’s the practical decision tree:

Writing for Americans?
→ Use acknowledgment.

Writing for a British audience?
→ Acknowledgement is a common choice.

Writing for a specific publication?
→ Follow its style guide.

Editing someone else’s work?
→ Preserve the author’s regional spelling unless the publication requires a different style.

Writing for an international audience?
→ Pick one English variety and apply it consistently.

That’s much more useful than memorizing a rule that labels one spelling “right” and the other “wrong.”

Acknowledgment or Acknowledgement: Quick Reference

Question	Answer
Is acknowledgment correct?	Yes.
Is acknowledgement correct?	Yes.
Which is preferred in US English?	Acknowledgment
Which is common in British English?	Acknowledgement
Do they have different meanings?	No
Are they pronounced differently?	No
Is acknowledgement an American spelling error?	Not necessarily
Is acknowledgment impossible in British English?	No
US plural	Acknowledgments
British plural	Acknowledgements
Best rule	Follow your audience and style guide

FAQs:

Is “acknowledgment” or “acknowledgement” correct?

Both are correct. Acknowledgment is the preferred spelling in American English, while acknowledgement is widely used in British English. Merriam-Webster lists acknowledgement as a variant.

Is “acknowledgement” wrong in American English?

No. It’s a recognized variant. However, acknowledgment is the better default for standard US English writing.

Is “acknowledgment” American or British?

Acknowledgment is strongly associated with American English. British English commonly uses acknowledgement.

Why does acknowledgement have an extra “e”?

The extra e reflects a regional spelling convention. American English generally uses the shorter acknowledgment.

Do acknowledgment and acknowledgement mean the same thing?

Yes. They have the same basic meanings, including recognition, gratitude, confirmation of receipt, and certain formal or legal uses.

What is the plural of acknowledgment?

In American English, the plural is acknowledgments. Acknowledgements is the corresponding variant. Merriam-Webster recognizes both forms.

Which spelling should I use in an American essay?

Use acknowledgment unless your instructor or required style guide specifies another form.

Which spelling should appear in a US book?

For a US publication, Acknowledgments is the natural choice.

Is there a pronunciation difference?

No. The two spellings are pronounced essentially the same way.

Can I use both spellings in one article?

You can, but you generally shouldn’t unless you’re specifically discussing the spelling variants. Consistency creates cleaner, more professional writing.

Conclusion:

Acknowledgment and acknowledgement are both correct. Your choice mainly depends on whether you’re following American or British English. Use acknowledgment for American English and acknowledgement for British English, then keep your spelling consistent throughout your writing.