Pajamas vs Pyjamas: UK vs US?

Have you ever paused while writing pajamas and wondered if it should actually be pyjamas? You’re not alone. This is one of the most common spelling differences between American English and British English.

The good news is that both words are correct—they simply belong to different regional spelling systems. Knowing which version to use depends on your audience, not on grammar rules.

In this guide, you’ll learn the difference between pajamas vs pyjamas, where each spelling is used, their pronunciation, history, and practical writing tips so you can choose the right form with confidence.


Table of Contents

Quick Answer Pajamas vs Pyjamas

Both pajamas and pyjamas are correct spellings.

  • Pajamas is the preferred spelling in American English.
  • Pyjamas is the standard spelling in British English and most Commonwealth countries, including Australia, New Zealand, and often India.
  • Both words have the same meaning and same pronunciation. The only difference is the regional spelling convention.

Rule of thumb: Write pajamas for an American audience and pyjamas for a British audience.


FeaturePajamasPyjamas
Correct spelling✅ Yes✅ Yes
English varietyAmerican EnglishBritish English
MeaningClothes worn for sleepingClothes worn for sleeping
PronunciationSameSame
Used in the US✅ YesRare
Used in the UKRare✅ Yes
Used in AustraliaRare✅ Yes
Used in New ZealandRare✅ Yes
Used in IndiaSometimesCommon
Formal writingCorrect for US EnglishCorrect for UK English

Pajamas (US) and pyjamas (UK) refer to loose-fitting clothes worn for sleeping or relaxing at home. Depending on the design, they may include:

  • A matching shirt and trousers
  • A T-shirt with pajama pants
  • Shorts and a sleep top
  • Winter flannel sleepwear
  • Lightweight cotton nightwear
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Today, pajamas are not limited to bedtime. Many people also wear them while relaxing at home, working remotely, or spending a quiet weekend indoors.

  • I bought a new pair of pajamas before my trip to New York.
  • She changed into her pyjamas before watching a movie.
  • These cotton pajamas are perfect for summer nights.
  • The children wore matching Christmas pyjamas.

There is no difference in meaning.

The difference is only in regional spelling.

Pajamas is the spelling preferred in American English. You’ll commonly find it in:

  • American newspapers
  • US schools
  • Online stores targeting American customers
  • Fashion brands based in the United States
  • American dictionaries
  • Pajama party
  • Pajama pants
  • Silk pajamas
  • Matching family pajamas

Pyjamas is the standard spelling in British English.

  • British newspapers
  • UK schools
  • British clothing brands
  • Australian and New Zealand websites
  • Many publications across the Commonwealth
  • Cotton pyjamas
  • Children’s pyjamas
  • Pyjama bottoms
  • Men’s pyjamas

Yes.

This isn’t a case where one word is right and the other is wrong. Instead, it’s similar to other regional spelling pairs such as:

  • Color vs Colour
  • Favorite vs Favourite
  • Organize vs Organise
  • Traveling vs Travelling
  • Theater vs Theatre

In each pair, the spelling changes according to the variety of English being used. The same rule applies to pajamas and pyjamas.


Many English learners see both spellings online and assume one must be incorrect. The confusion grows because:

Different Countries Teach Different Spellings

Someone studying American English learns pajamas, while someone using British English learns pyjamas.

Online Shopping Shows Both

Large international retailers often display different spellings depending on your location. A shopper in London may see men’s pyjamas, while a customer in California sees men’s pajamas.

Movies and TV

American films almost always use pajamas, whereas British television programs generally use pyjamas.

Search Engines Show Mixed Results

Because the internet serves a global audience, Google frequently displays pages using both spellings. Without understanding regional English, it’s easy to think one version is a typo.


The best choice depends entirely on who you’re writing for.

If Your Audience Is American

Choose pajamas.

Examples:

  • American blogs
  • US businesses
  • Product descriptions for US customers
  • School assignments following American English

Example:

Our store sells comfortable cotton pajamas for every season.

If Your Audience Is British

Choose pyjamas.

Examples:

  • UK businesses
  • British schools
  • UK magazines
  • British publishers

Example:

These warm pyjamas are ideal for cold winter nights.

If Your Audience Is International

Follow one spelling system consistently.

Don’t switch between pajamas and pyjamas within the same article unless you’re specifically comparing the two words, as in this guide.

Consistency looks more professional and helps readers understand which variety of English you’re using.

Imagine you’re writing product descriptions for different markets.

For a US clothing store:

Our cotton pajamas are soft, breathable, and perfect for year-round comfort.

For a UK clothing retailer:

Our premium cotton pyjamas provide exceptional comfort throughout the night.

Both sentences are equally correct. The only difference is the target audience.


One of the biggest surprises for English learners is that pajamas and pyjamas are pronounced exactly the same. The spelling changes, but the pronunciation does not.

IPA Pronunciation

VarietyIPASounds Like
American English/pəˈdʒɑː.məz/puh-JAH-muhz
British English/pəˈdʒɑː.məz/puh-JAH-muhz

Whether you’re speaking in New York, London, Sydney, or Toronto, most native speakers pronounce the word in nearly the same way.

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Common Pronunciation Mistakes

Many English learners mistakenly pronounce the first syllable as “pay” or “pie.” The correct sound is a soft “puh” followed by “JAH.”

Correct: puh-JAH-muhz

Incorrect: pay-JAH-muhz

Incorrect: pie-JAH-muhz


The history of this word is far more interesting than most people realize.

Unlike many English words that originated in Latin or French, pajamas came into English through South Asia.

From Persian to Urdu

The word traces its roots to the Persian word pāy-jāmeh, which literally means:

  • pāy = leg
  • jāmeh = garment or clothing

Together, the phrase meant “leg garment.”

As Persian influenced several South Asian languages, the word became part of Urdu and Hindi, where it referred to loose-fitting trousers.

British India and the English Language

During the period of British rule in the Indian subcontinent, British officials encountered these comfortable loose trousers and adopted both the clothing and its name.

By the early nineteenth century, the word had entered British English as pyjamas.

Over time, the garment evolved from loose trousers into the matching sleepwear we recognize today.

Why America Uses “Pajamas”

As American English developed its own spelling conventions, many words were simplified.

Examples include:

British EnglishAmerican English
ColourColor
FavouriteFavorite
JewelleryJewelry
PyjamasPajamas

American publishers gradually preferred pajamas, while British publishers continued using pyjamas.

Today, both spellings remain standard within their respective varieties of English.


Understanding regional English helps explain why both spellings exist.

If you’re writing for readers in the United States, use:

  • Pajamas
  • Pajama pants
  • Pajama party
  • Matching pajamas

This spelling appears in:

  • American newspapers
  • US universities
  • Government publications
  • Most American retailers
  • US dictionaries

She packed two pairs of pajamas for her vacation.

If your audience is in the United Kingdom, choose:

  • Pyjamas
  • Cotton pyjamas
  • Children’s pyjamas
  • Pyjama bottoms

You’ll commonly see this spelling in:

  • British newspapers
  • UK publishers
  • British schools
  • UK clothing brands

Example:

He bought a new pair of striped pyjamas.

Canadian English is influenced by both British and American English.

As a result, you’ll find both pajamas and pyjamas in Canada.

However:

  • American-style media often uses pajamas.
  • Traditional Canadian publishing may prefer pyjamas.

The most important rule is consistency.

Australia and New Zealand generally follow British English spelling.

You’ll usually see:

  • Pyjamas
  • Children’s pyjamas
  • Winter pyjamas

Although American spelling is becoming more common online, pyjamas remains the standard choice in formal writing.

Because British English has historically influenced education in both countries, pyjamas is still widely accepted in schools, newspapers, and formal writing.

At the same time, global brands and American websites often use pajamas, so readers regularly encounter both spellings online.


Checking a trusted dictionary is one of the easiest ways to confirm the preferred spelling for your audience.

DictionaryPreferred Form
Merriam-WebsterPajamas
American Heritage DictionaryPajamas
Cambridge DictionaryPyjamas (UK), Pajamas (US)
Oxford English DictionaryPyjamas (UK), Pajamas (US)
Collins DictionaryBoth, depending on region

These dictionaries agree on one important point:

Both spellings are correct—they simply reflect different regional standards.

Professional writers, editors, and businesses often follow established style guides rather than personal preference.

AP Style (Associated Press)

If you’re writing in American English for newspapers or news websites, use pajamas.

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Chicago Manual of Style

Follow the spelling that matches your chosen variety of English. If you’re writing in American English, use pajamas consistently.

Oxford Style

British publications generally use pyjamas.

Cambridge Style

Cambridge recognizes both spellings and recommends choosing the version that matches your audience.


This depends on where your readers or customers are located.

If Your Website Targets the United States

Use pajamas throughout your content.

Examples include:

  • Product pages
  • Blog articles
  • Email newsletters
  • Category pages

If Your Website Targets the United Kingdom

Use pyjamas consistently across:

  • Product descriptions
  • Blog posts
  • Marketing campaigns
  • Help articles

If Your Audience Is Global

Choose one spelling system before you begin writing and stick with it.

Mixing American and British spellings in the same article can make your content look inconsistent and less professional.

Even experienced writers sometimes make these mistakes.

Mixing Both Spellings

❌ Our store sells cotton pajamas and children’s pyjamas.

✅ Our store sells cotton pajamas and children’s pajamas.

OR

✅ Our store sells cotton pyjamas and children’s pyjamas.

Changing Spelling Mid-Article

Choose one spelling based on your audience and use it consistently from the introduction to the conclusion.

Assuming One Is Incorrect

Many learners believe pyjamas is old-fashioned or that pajamas is the only correct spelling.

In reality, both are standard English.

Ignoring Your Audience

A UK audience naturally expects pyjamas, while American readers are more familiar with pajamas.

Using the regional spelling your audience expects creates a smoother reading experience.

Remember this simple rule:

  • A = America = Pajamas
  • Y = United Kingdom’s traditional spelling = Pyjamas

Another easy way to remember it:

If you’re writing for the USA, choose the version without “Y.” If you’re writing for the UK, keep the “Y.”

This quick trick can help you avoid second-guessing yourself whenever you write the word.


Seeing the words in context is the easiest way to remember which spelling fits your audience.

  • I bought a new pair of pajamas for the winter.
  • The kids wore matching pajamas on Christmas morning.
  • She changed into her pajamas after work.
  • These cotton pajamas are soft and breathable.
  • Our store sells men’s, women’s, and children’s pajamas.
  • He forgot to pack his pajamas for the trip.
  • My grandmother gave me silk pajamas as a birthday gift.
  • We had a family movie night in our pajamas.
  • The hotel provided comfortable pajamas for every guest.
  • She prefers lightweight pajamas during summer.

  • He folded his pyjamas before leaving for school camp.
  • I bought new cotton pyjamas yesterday.
  • She washed the children’s pyjamas in warm water.
  • These winter pyjamas are incredibly warm.
  • He spent the entire Sunday in his pyjamas.
  • The baby looked adorable in striped pyjamas.
  • My sister prefers satin pyjamas.
  • The shop sells premium organic cotton pyjamas.
  • She packed two pairs of pyjamas for the holiday.
  • Everyone wore matching Christmas pyjamas.

Learning related vocabulary helps you understand how the word is used naturally.

WordMeaning
SleepwearClothing worn for sleeping
NightwearAnother term for sleep clothes
LoungewearComfortable clothes for relaxing at home
Pajama pantsLoose sleeping trousers (US)
Pyjama bottomsLoose sleeping trousers (UK)
Pajama setMatching sleepwear (US)
Pyjama setMatching sleepwear (UK)
RobeA loose outer garment worn over sleepwear
SlippersIndoor footwear often worn with pajamas or pyjamas

These word combinations appear frequently in everyday English.

American English

  • Cotton pajamas
  • Silk pajamas
  • Flannel pajamas
  • Matching pajamas
  • Family pajamas
  • Christmas pajamas
  • Kids’ pajamas
  • Pajama party
  • Pajama pants
  • Cozy pajamas

British English

  • Cotton pyjamas
  • Warm pyjamas
  • Children’s pyjamas
  • Christmas pyjamas
  • Pyjama bottoms
  • Pyjama set
  • Comfortable pyjamas
  • Winter pyjamas
  • Soft pyjamas
  • Striped pyjamas

Here’s a simple decision guide.

If you’re writing for…Use…
United StatesPajamas
United KingdomPyjamas
AustraliaPyjamas
New ZealandPyjamas
CanadaEither (stay consistent)
IndiaUsually Pyjamas in British English; Pajamas if following American English
PakistanUsually Pyjamas in British English; Pajamas if following American English
International audienceChoose one style and use it consistently

The key isn’t choosing the “right” spelling—it’s choosing the appropriate spelling for your readers.


Is pajamas the correct spelling?

Yes. Pajamas is the standard spelling in American English.

Is pyjamas also correct?

Absolutely. Pyjamas is the standard spelling in British English and many Commonwealth countries.

Do pajamas and pyjamas have different meanings?

No. Both words refer to the same type of clothing worn for sleeping or relaxing at home.

Why does American English use pajamas?

American English simplified the spelling over time, just as it did with words like color and favorite.

Which spelling should I use in academic writing?

Follow the style required by your institution or publisher. Use pajamas for American English and pyjamas for British English.

Is pyjama singular?

Yes. Although it’s less common in everyday conversation, pyjama (or pajama in American English) can refer to a single garment, such as a pyjama top or pajama shirt.

Can I use both spellings in the same article?

Only if you’re explaining the difference between them. Otherwise, stick to one spelling throughout your content.

Are pajamas considered loungewear?

Many modern pajamas are designed for both sleeping and relaxing at home, so they often overlap with loungewear. However, not all loungewear is intended for sleeping.

Which spelling do online stores use?

It depends on the target market. American retailers typically use pajamas, while British retailers usually use pyjamas.


The debate over pajamas vs pyjamas isn’t about right versus wrong—it’s about regional spelling preferences.

Both words share the same pronunciation, meaning, and history, tracing their roots back to Persian through Urdu and Hindi before entering English.

The best choice depends on your audience. Whether you’re writing a blog post, preparing academic work, publishing product descriptions, or simply improving your English, consistency is what matters most.

Once you know who you’re writing for, choosing between pajamas and pyjamas becomes easy.


  • ✅ Both pajamas and pyjamas are correct.
  • Pajamas is the American English spelling.
  • Pyjamas is the British English spelling.
  • ✅ The pronunciation is the same.
  • ✅ The meaning is exactly the same.
  • ✅ Use the spelling your audience expects.
  • ✅ Stay consistent throughout your writing.

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