Why Do We Call Raincoats “Kappa” in Japan? Exploring the Origins and History

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The Meaning and Etymology of “Kappa”

Have you ever heard of the term “kappa” in reference to raincoats? In Japan, this traditional word has been used for centuries to describe waterproof garments. But why is it called “kappa,” and where did this term originate from?

One popular theory suggests that the word “kappa” comes from the combination of two Japanese words: “awaseru,” meaning “to combine” or “to put together,” and “ha,” meaning “feathers.” In the Edo period (1603-1868), raincoats were made by layering multiple sheets of fabric or paper. The appearance of these layered materials resembled the overlapping feathers of a bird, leading to the term “awase-ha” (combined feathers), which eventually evolved into “kappa” [^1].

[^1]: Kitahara, Y. (2011). Meikyō Kokugo Jiten. Taishūkan Shoten.

The Surprisingly Long History of Kappa

The term “kappa” can be traced back to the Heian period (794-1185) in Japan. During this time, aristocrats wore a type of rainwear called “eboshi-gappa,” which consisted of a hat (eboshi) and a rain cape (kappa) [^2].

In the Edo period, kappa became more widely used among commoners, particularly farmers and travelers. These early versions of kappa were made from materials like hemp cloth or paper, coated with lacquer to make them waterproof—quite different from the modern-day raincoats we know now.

[^2]: Yasugi, S. (2015). Nihon no Ifuku no Rekishi. Yoshikawa Kōbunkan.

Kappa in Contemporary Japan

Today, the word “kappa” is still used in Japan, especially in the construction industry, where it refers to work-specific raincoats. Some regions also use “kappa” to describe children’s raincoats worn for school commutes.

However, younger generations in Japan are becoming less familiar with the term “kappa,” as it is gradually being replaced by words like “rein-kōto” (raincoat), “rein-uea” (rainwear), and the English loanword “kappa.”

Remembering the Origins of Kappa on Rainy Days

The word “kappa” is a charming reminder of Japan’s history and culture, embodying the wisdom of our ancestors who sought to create garments that repel water like a bird’s feathers.

The next time you reach for your raincoat on a rainy day, take a moment to remember the origins of the word “kappa.” It might just add a little extra enjoyment to your rainy day outing!

We hope you found this exploration of the term “kappa” interesting and informative. If it has left you looking forward to the next rainy day, then we’ve done our job! Until next time, enjoy the rain and stay dry!

Art of Edo Japan: The Artist and the City 1615-1868
Art of Edo Japan: The Artist and the City 1615-1868
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