Etymology

tour de force

Today it means: A feat demonstrating brilliance or mastery in a field. Full definition →

French tour de force
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The story

  1. French · borrowed fromtour de force“feat of strength”
  2. English todaytour de force

Borrowed from French tour de force (“feat of strength”), circa 19th century.

Etymology from Wiktionary, CC BY-SA 4.0.