Etymology

placid

plac·id
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Today it means: calm and quiet; peaceful; tranquil Full definition →

French placide ← Latin placidu ← Proto-Indo-European *dʰeh₁-
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The story

  1. Latinplaceō
  2. Proto-Indo-European*dʰeh₁-
  3. Latinplacidu
  4. Frenchplacide
  5. English todayplacid

Borrowed from French placide, from Latin placidus (“peaceful, calm, placid”), from placeō (“please, satisfy”).

Etymology from Wiktionary, CC BY-SA 4.0.