Etymology

Moriarty

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Today it means: An archenemy or nemesis, especially a highly intelligent one. Full definition →

Irish Ó Muircheartaigh
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Moriarty · proper noun1

  1. Irish · derived fromÓ Muircheartaigh“descendant of Muircheartach”
  2. English todayMoriarty

From Irish Ó Muircheartaigh (“descendant of Muircheartach”), a name from muir (“sea”) + ceardaí (“craftsman”).

Moriarty · noun2

In reference to Professor James Moriarty, fictional archenemy and nemesis of Sherlock Holmes

Etymology from Wiktionary, CC BY-SA 4.0.