Etymology

Tilsit

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Today it means: Former name of Sovetsk: a city in Kaliningrad Oblast, Russia. Full definition →

German Tilsit ← Old Prussian tilzi
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The story

  1. Old Prussian · derived fromtilzi“soggy”
  2. German · borrowed fromTilsit
  3. English todayTilsit

From German Tilsit, from the name of the Tilse River, from Old Prussian tilzi (“soggy”).

Etymology from Wiktionary, CC BY-SA 4.0.