Etymology

uncle

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Today it means: The brother or brother-in-law of one’s parent. Full definition →

Middle English uncle ← Old French uncle ← Latin avunculus
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The story

  1. Proto-Indo-European*h₂éwh₂os
  2. Latinavunculus
  3. Old Frenchuncle
  4. Middle Englishuncle
  5. English todayuncle

From Middle English uncle, borrowed from Anglo-Norman uncle and Old French oncle, from Vulgar Latin *aunclum, from Latin avunculus (“maternal uncle”, literally “little grandfather”), from Proto-Indo-European *h₂euh₂-n-tlo- (“little grandfather”), a dialectal diminutive of *h₂éwh₂ō (“grandfather, adult male relative other than one’s father”) (whence also Latin avus (“grandfather”)). Displaced native Middle English em (“uncle”) from Old English ēam (“maternal uncle”), containing the same Proto-Indo-European root, and Old English fædera (“paternal uncle”). Compare Saterland Frisian Unkel (“uncle”), Dutch nonkel (“uncle”), German Low German Unkel (“uncle”), German Onkel (“uncle”), Danish onkel (“uncle”). More at eam and eame.

Words from the same roots

Etymology from Wiktionary, CC BY-SA 4.0.