Pyjamas 🇬🇧
Correct spelling in the UK, Australia, New Zealand, and most English-speaking countries.
Pajamas 🇺🇸
Correct spelling exclusively in the United States.
Getting ready for a good night’s sleep should be relaxing, but for writers and language learners, the spelling of your sleepwear can cause a moment of stress. If you have ever paused before typing this word, you are not alone. The difference comes down to geography, not grammar.
Both versions refer to the exact same loose-fitting trousers and shirt worn for sleeping. The only distinction lies in which side of the Atlantic Ocean you are standing on. Pajamas is the standard American spelling, while pyjamas is the preferred spelling in British English and throughout the Commonwealth.
The Main Difference: A vs. Y
The confusion stems from a simple vowel swap. This is a classic example of American spelling divergence, similar to color vs. colour or gray vs. grey. However, unlike some other spelling variations, neither of these is “wrong.” They just have specific homes.
🇺🇸 United States
If you are writing for an American audience, always use pajamas. The ‘y’ spelling will look foreign or incorrect to American readers.
🇬🇧 United Kingdom & Rest of World
If you are in London, Sydney, Toronto, or Dublin, use pyjamas. This preserves the traditional spelling derived from the original loanword.
Examples in Sentences
Seeing words in context helps cement the rule. Notice how the spelling changes based on the speaker’s location, but the meaning remains identical.
- American English: “I bought a new pair of silk pajamas for the trip.”
- British English: “He spent the entire Sunday lounging in his pyjamas.”
- News Headline (US): “Sales of Flannel Pajamas Soar in Winter.”
- News Headline (UK): “Children wear pyjamas to school for charity day.”
Interesting Fact: Canadian English often sits on the fence. While Canadians generally follow British spelling conventions (pyjamas), the influence of American media means you will frequently see pajamas in Canada as well.
The Universal Short Form: PJs
If you are writing informally and want to avoid the spelling headache entirely, you have a safe escape route. The abbreviation PJs is universally accepted in both American and British English. It is casual, fun, and requires no decision between ‘a’ and ‘y’.
Another common informal term is jammies. Interestingly, jammies is spelled with an ‘a’ in both the UK and the US, likely because it mimics the sound of the short ‘a’ vowel.
Grammar Watch: Singular or Plural?
Regardless of how you spell it, this word follows the same grammatical rule as trousers, jeans, or scissors. It is a plural noun.
❌ Incorrect: “I am wearing a pajama.” / “Where is my pyjama?”
✅ Correct: “I am wearing a pair of pajamas.” / “Where are my pyjamas?”
You never wear “a pyjama.” You wear a pair. If you need to refer to just the top or the bottom part, you must be specific:
- “I can’t find my pyjama bottoms.”
- “That is a lovely pajama top.”
A Quick Look at History
Why is this word so unique? It traveled a long way to get to English dictionaries. The word comes from the Hindustani word pa-jama, which originated from the Persian pay-jama. Etymologically, it breaks down to:
| Original Word | Meaning |
|---|---|
| Pay | Leg |
| Jama | Garment / Clothing |
British colonists in India adopted the loose, lightweight trousers in the 19th century as an alternative to their restrictive nightgowns. They brought the style—and the word—back to England, where it eventually crossed over to America.
