Etymology

casus foederis

Today it means: A situation covered by the terms of an international treaty (or similar understanding), and which consequently requires action from the parties involved. Full definition →

Latin casus
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The story

  1. Latin · derived fromcasus“case”
  2. English todaycasus foederis

From Latin casus (“case”) + foederis, genitive of foedus (“treaty”).

Words from the same roots

Latincasus all →

casecasualtycasuistcasuisticscasus belli

Etymology from Wiktionary, CC BY-SA 4.0.