Etymology

Jekyll

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Today it means: A surname. Full definition →

Old Breton Iudicael
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The story

  1. Old Breton · derived fromcael“generous, noble”
  2. Old Breton · derived fromiudd“lord, ruler, prince”
  3. Old Breton · derived fromIudicael
  4. English todayJekyll

From a Breton name also appearing in various forms in French Judicaël, Gicquel, Jézéquel, etc., ultimately from Old Breton Iudicael, the name of a Breton king revered as a Catholic saint. His name is from Old Breton iudd (“lord, ruler, prince”) + Old Breton cael (“generous, noble”) (whence modern Breton cael (“generous, noble”)).

Words from the same roots

Old Bretoniudd all →

Judicael

Old Bretoncael all →

Judicael

Etymology from Wiktionary, CC BY-SA 4.0.