Etymology

mushroom

mush·room
M3U1S1H4R1O1O1M3

Today it means: Any of the fleshy fruiting bodies of fungi typically produced above ground on soil or on their food sources (such as decaying wood). Full definition →

Middle English muscheron ← Anglo-Norman musherum ← Old French moisseron
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The story

  1. Proto-Indo-European · derived from*mews-“mosses, mold, mildew”
  2. Proto-Germanic · derived from*musą
  3. Old Dutch · derived from*mosa“moss”
  4. Frankish · derived from*mosu“moss”
  5. Old French · derived frommosse
  6. Old French · derived frommoisseron
  7. Anglo-Norman · derived frommusherum
  8. Middle English · inherited frommuscheron
  9. English todaymushroom

From Middle English muscheron, musseron, from Anglo-Norman musherum, moscheron, from Old French moisseron, of obscure origin: probably derived from Old French mosse, moise ("moss"; whence also French mousse), as the use first applied to a type of fungus which grows in moss, from Frankish *mosu (“moss”) or Old Dutch *mosa (“moss”), akin to Old High German mosa (“moor, swamp”), Old High German mos (“moss, bog”), Old High German mios (“moss, mire”), Old English mēos (“moss”), Old English mōs (“bog, marsh”), Old Norse mosi (“moss”), Old Norse myrr (“bog, mire”), from Proto-Germanic *musą, *musô, *miuziz (“mosses, bog”), from Proto-Indo-European *mews- (“mosses, mold, mildew”). Displaced native Old English swamm. More at mire. Alternatively, the Old French may be of pre-Roman origin. See Ancient Greek μύκης (múkēs, “mushroom”). Doublet of moss and mousse.

Words from the same roots

Old Frenchmosse all →

mousse

Old Dutch*mosa all →

mousse

Proto-Germanic*musą all →

mossmousse

Proto-Indo-European*mews- all →

moss

Etymology from Wiktionary, CC BY-SA 4.0.