Pajamas

The story of pajamas begins far from the bedroom, in Persian. The word is generally traced to Persian pāy-jāmah, a compound of pāy, meaning “leg,” and jāmah, meaning “garment” or “clothing.” In its original sense, the term referred broadly to loose trousers or leg coverings rather than a matched sleep outfit. That older meaning matters, because it shows that pajamas were first named not for sleeping in them, but for the way they were worn: as a practical garment for the lower body, suitable for warmth, modesty, and ease of movement.

From Persian, the word passed into South Asian languages during centuries of Persian cultural influence in the region, especially through Urdu and related forms. In colonial-era English, British speakers encountered the garment and its name in India, where lightweight drawstring trousers were commonly worn in daily life. English borrowed the word as pajama or pyjama, at first referring to the loose trousers themselves. Only later did the term shift in English toward the familiar two-piece sleeping suit, a change that reflects how imported clothing often gets reinterpreted once it enters a new culture.

The spelling history is also a small lesson in English variability. Early English forms include pajama, pyjama, and even more occasional spellings influenced by local pronunciation and French-style transliteration. The word’s final -s in pajamas is not a classical plural marker from the source languages; rather, English treated the garment as a plural-like or collective noun, much as it does with words such as trousers or shorts. In American English, pajamas became the standard spelling, while pyjamas remains common in British English and many other varieties.

Over time, pajamas moved from borrowed exotica to everyday wardrobe staple. In the late nineteenth and early twentieth centuries, they helped replace the older nightshirt for many men in the West, and eventually became standard sleepwear for all genders and ages. The word also expanded metaphorically: “to be in your pajamas” can imply informality, relaxation, or a lack of readiness for public life. Yet the etymological core is still visible beneath the modern softness of the word—pajamas began as a practical term for legwear, and only later became the name for the whole idea of bedtime comfort.