Etymology

Arthur

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Today it means: Guinness stout. Full definition →

Middle English Arthure ← Medieval Latin Arthurus ← Old Welsh arth
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Arthur · proper noun1

  1. Old Welsh · derived fromarth“bear”
  2. Medieval Latin · derived fromArthurus
  3. Middle English · inherited fromArthure
  4. English todayArthur

From the name of the legendary king, from Middle English Arthure, from Medieval Latin Arthurus, probably from Middle Welsh arth (“bear”). Other suggestions include Old Welsh arth (“bear”) and ur (“man”), or a Latinized (Romano-British) name; compare Latin Artorius, itself possibly of Etruscan origin, or more likely Messapic-Illyrian related to Proto-Albanian *artsa (“bear”).

Arthur · noun2

After Arthur Guinness, a famous brewer.

Etymology from Wiktionary, CC BY-SA 4.0.