Etymology

leprous

lepr·ous
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Today it means: Of or relating to one of the diseases known as leprosy. Full definition →

Middle English leprous ← Anglo-Norman leprous ← Middle French lepros
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The story

  1. Ancient Greek · derived fromλέπρᾱ“leprosy”
  2. Latin · derived fromlepra“leprosy”
  3. Late Latin · derived fromleprosus“having leprosy; (alchemy) of metals: impure; a leper”
  4. Old French · derived fromleprous
  5. Middle French · derived fromlepros
  6. Anglo-Norman · derived fromleprous
  7. Middle English · inherited fromleprous“having leprosy or a skin disease with symptoms like leprosy; (alchemy) of metals or minerals: impure; a leper”
  8. English todayleprous

From Middle English leprous (“having leprosy or a skin disease with symptoms like leprosy; (alchemy) of metals or minerals: impure; a leper”) [and other forms], from Anglo-Norman leprous, lepros [and other forms], Middle French lepros, lepreux, and Old French leprous, lepros (“having leprosy; a leper”) (modern French lépreux), and from their etymon Late Latin leprosus (“having leprosy; (alchemy) of metals: impure; a leper”), from Latin lepra (“leprosy”) + -ōsus (suffix meaning ‘full of; overly; prone to’ forming adjectives from nouns). Lepra is derived from Ancient Greek λέπρᾱ (léprā, “leprosy”), from λεπῐ́ς (lepĭ́s, “flake, scale; epithelial debris”) (perhaps from λέπω (lépō, “to peel, strip off a husk or rind”) + -ῐς (-ĭs, suffix forming feminine nouns)) + -ᾱ (-ā, suffix forming action nouns from verbs).

Words from the same roots

Late Latinleprosus all →

Latinlepra all →

lepra

Etymology from Wiktionary, CC BY-SA 4.0.