๐ When monsoon first entered English, there was no rain in it — Woody Magazine, May 27, 2026
When monsoon first entered English, there was no rain in it
Four weeks before the rainy season reaches the Korean peninsula, a short history of how five languages came to describe the same rain — and looked away in five different directions.
In 1595, a thick volume appeared in Amsterdam. The author was Jan Huygen van Linschoten, a Dutchman who had spent six years in the Portuguese colony of Goa and had quietly copied down everything he could about Portugal's secret sea routes through the Indian Ocean. Three years later, an English translation followed in London. Inside that translation, English readers met a word they had never seen before: monsoen, a wind, the book explained, that reversed direction once every six months with such reliability that ships timed their entire careers around it.
Linschoten had borrowed the word from Portuguese sailors, who had borrowed it earlier still from Arab navigators they encountered in the fifteenth and sixteenth centuries. The original was Arabic mawsim (ู ูุณู ). Its root, w-s-m, meant simply to mark. A mawsim, then, was a marked time — a season that had been noted, set apart, given a name because it returned.
What is striking is how broad that word was. A mawsim could be the period when ships could safely depart for India. It could be the pilgrimage season, when caravans set out for Mecca. In the Maghreb, it referred to the great annual saint's festivals — local fairs that drew worshippers from far away. It could mean the harvest. Anything that came round again, on a calendar one could trust. The trade winds were a single use among many.
The rain came later. Etymological dictionaries date that semantic shift to around 1747. By then British traders had been on the Indian subcontinent long enough to know that the southwest monsoon wind did not simply blow — it arrived hauling water, four months of it, in quantities that broke roads and roofs. Slowly, the name of the wind slid sideways into the name of the rain. The word had been pulled toward the landscape it kept arriving at.
Korean took a completely different path. The earliest written form, in sixteenth-century Korean documents, was dyangmah (๋ฑ๋งใ ) — a compound of the Sino-Korean character ้ท ("long") and a native Korean word mah meaning, simply, rain. From its very first appearance, then, the Korean word meant "the long rain." There was no wind in it, no calendar, no pilgrimage. There was only the length of the downpour.
Earlier still — fifteenth-century Korean texts already carried another word for the same thing: oranbi (์ค๋๋น), a fully native compound meaning roughly "the rain that has lasted." But as dyangmah hardened, through several spellings, into the modern jangma, oranbi quietly lost its place. Today it is no longer listed in the National Institute of Korean Language's standard dictionary. Some Korean-language advocates have been trying to bring it back. One word survived by swallowing another.
Japan's name for the season hides a stranger story. The word is tsuyu (ๆข ้จ), also read baiu, and the two Chinese characters mean, literally, "plum rain" — the rain that falls when Japanese plums (ume) ripen in June. It is a famously elegant name. But one widely cited theory holds that the original Chinese characters were not ๆข ้จ but ้ปด้จ — mold rain. The two share the same pronunciation in Middle Chinese, but the first character meant fungus, mildew, the green stuff that overtakes wooden houses in a humid June. At some point along the way, the theory goes, someone decided that "mold rain" was too unappealing an image for a whole season, and swapped in the homophone for plum. A small aesthetic decision, made centuries ago, that still governs how three East Asian countries write the word today.
The Arab navigator looked at time. The British colonial looked at the downpour. The Korean farmer looked at how many days it lasted. Japan looked at the ripening fruit. China looked at the poetry of southern rivers. Same atmospheric event, five languages, five places to rest the eye.
By the long-term averages used in Korean forecasting, the 2026 rainy season is expected to reach Jeju Island around June 19 and the Seoul metropolitan area around June 25–27. About four weeks from today. When forecasters in English use the word monsoon to translate jangma, the word will carry inside it almost a millennium of Arab navigators marking the time of safe passage, an obsolete Korean word for "the rain that lasted," and an old Chinese decision to write fungus as a fruit. Most of that will pass without comment. Some of it is worth a Wednesday.
- Online Etymology Dictionary — monsoon (1580s, 1747 semantic shift)
- Wikipedia — Monsoon (etymology, Linschoten 1595/1598)
- South China Morning Post — "How the words 'monsoon' and 'trade wind' blew into the English language" (Language Matters)
- Macquarie University — Lachlan and Elizabeth Macquarie Archive: Monsoon
- U.S. National Weather Service — What is a Monsoon? (PDF)
- National Institute of Korean Language — etymology entry for jangma
- Urimunhwa Shinmun — "Oranbi: the lost native Korean word for the rainy season"
- Wiktionary — ๆข ้จ (้ปด้จ alternative-spelling theory, Song-era citation)
- Wikipedia — East Asian rainy season (jangma, tsuyu, mรฉiyว comparison)
- Wikitree — 2026 Korean rainy-season forecast by region (long-term averages)
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