Skip to content
Inku

Blog

Wasei-eigo: 50 English Words the Japanese Changed Beyond Recognition

Why マンション (manshon) means apartment, not mansion. A tour through the English words Japan quietly rewrote.

BBao HuaUpdated 2026-04-2112 min read

What wasei-eigo is

Wasei-eigo (和製英語, literally “Japan-made English”) is the set of Japanese words that look English but aren't. Either they have a different meaning than the English source, or they were assembled from English parts in a way English never uses.

These words are written in katakana. They feel like English when you sound them out. And if you assume they mean what the English cognate means, you will be wrong in dozens of common cases.

Examples to know

The following words are common enough that you will run into them within your first month of exposure to real Japanese. Learn them, and a chunk of katakana stops being confusing.

KatakanaReadingMeaningNote
manshonApartment (condominium building)Not a mansion, a standard apartment.
konsentoElectrical outletFrom 'concentric plug.' Means power socket.
sukinshippuPhysical affection / touchFrom skin + ship. Nobody says this in English.
sararīmanOffice worker / salaried workerA full archetype, not just a job title.
nōto-pasokonLaptopNotebook + personal computer. A compound loan.
bebīkāStrollerNot a car, a push-chair for babies.
gasorin-sutandoGas stationGasoline + stand.
pēpā doraibāLicensed driver who never drivesHas the paper license but no practice.
risutoraLayoff / corporate restructuringFrom 'restructuring.' Carries job-loss implication.
ōdā meidoCustom-made / bespokeOrder + made. Used for tailoring.
mai kāOwning your own carMy + car. 'Mai' can attach to many things: マイペース (my pace, one's own pace).
arubaitoPart-time jobFrom German 'Arbeit,' not English. Shortened to バイト (baito) in speech.
dokutā sutoppuDoctor's order to stop somethingDoctor + stop. Almost always about quitting smoking or drinking.
wan pīsuA dressA one-piece dress. Not a pirate manga (that's a separate use).
torēnāSweatshirtNot a personal trainer. A sweatshirt.
pantsuUnderwearNot trousers. Trousers are ズボン (zubon).
handoruSteering wheelNot a handle in general. Specifically the wheel you drive with.
kūrāAir conditionerAC. Not a cool box.

Why wasei-eigo happens

Japanese borrows English liberally. When a new word enters the language, its meaning gets shaped by the niche it fills. A “mansion” in 1960s Japan was a new type of Western-style apartment building, fancier than the existing アパート (apāto). Over decades, マンション came to mean “any apartment in a concrete building,” not anything grand. Meanwhile, English kept “mansion” as a word for rich people's houses.

Sometimes wasei-eigo is assembled from English parts to name a concept that did not have a word. スキンシップ (skin + ship) was coined in the 1950s by a child-development researcher to mean “physical affection between parent and child.” English never used it; Japanese kept it.

Learning these patterns is faster than memorizing one-by-one. When you see a katakana word that seems to mean one thing in English, check whether it has drifted. Often it has.

Common questions

Is wasei-eigo slang?+

No, most of it is standard Japanese. マンション appears in real estate listings, ガソリンスタンド on highway signs. It's part of the language.

How do I know when a katakana word is wasei-eigo vs real English?+

You often can't, until you learn. The safest guess is that 20-30 percent of katakana words have a shifted or invented meaning.

Try Inku, free for 7 days, or read the full roadmap.