ジュバン

If ジュバン looks completely Japanese when written 襦袢, surprise: the sound is hiding Portuguese clothing history. Japanese dictionaries commonly trace it to Portuguese gibão or jubão, a word for a short jacket or body garment. This puts ジュバン in the Nanban contact layer, the same broad world that gave Japanese words for foods, tools, clothing, and trade goods during early contact with Portuguese speakers. The kanji 襦袢 make the word look neatly Sino-Japanese, but they are ateji, characters fitted to the sound and meaning after the borrowing. The spelling dressed the foreign word in Japanese clothing. The meaning changed clothes too. A Portuguese-style jacket or jerkin did not simply remain a European outer garment. In Japanese, 襦袢 came to mean an undergarment for kimono, especially in words like 肌襦袢, 半襦袢, and 長襦袢. The word moved inward, from something like a body garment to the layer worn under formal Japanese dress. Modern learners may not meet ジュバン every day unless they study kimono, theater, dance, tea ceremony, or older literature. But when it appears, it carries a beautiful contradiction: it looks traditional, sounds old, and yet its name remembers contact with Portuguese. That is the real lesson. Kanji do not guarantee native origin. Sometimes Japanese gives a borrowed word elegant characters, lets it settle into local culture, and after a few centuries it feels as if it was always there. 襦袢 is a foreign word wearing a kimono underlayer.