褌

The fundoshi is a loincloth with a documented history in Japan stretching to at least the Nara period, 710 to 794 CE. Court records and scroll paintings from this era show men wearing wrapped cloth around the waist and between the legs. The garment appears in Shinto ritual contexts, in early sumo records, and in the everyday dress of farmers and laborers alike. It was not underwear in the modern sense of something hidden; it was the garment itself.

The word 褌 has a contested origin. One theory connects it to 分銅 (fundou), the iron weights used on balance scales, whose teardrop shape resembles the cloth when folded. Another links it to an archaic verb meaning to bind the loins. By the Heian period (794 to 1185), the fundoshi had differentiated into distinct styles: the rokushaku style, six feet of cloth wound elaborately, and the shorter mokko style worn by laborers and festival participants.

The Edo period (1603 to 1868) saw the fundoshi reach its widest cultural penetration. Woodblock prints by artists such as Hokusai show working men in fundoshi as a matter of course. Kabuki actors wore them on stage; fishermen wore them into the sea; firefighters wrapped them under protective gear. The garment carried no shame and no class signal, as a daimyo's page and a vegetable seller wore essentially the same thing beneath their robes.

Western-style underwear arrived with the Meiji Restoration of 1868, and by the mid-twentieth century the fundoshi had retreated from daily life into ceremony and nostalgia. Today it appears at matsuri (festivals), in sumo, and in a small contemporary revival movement that prizes its breathability and minimal material. English borrowed the word after World War II, when journalists and anthropologists began writing about Japanese material culture.