# casus foederis

> English word · Noun · IPA /ˌkeɪ.səs ˈfiː.də.ɹɪs/

## Definitions
1. A situation covered by the terms of an international treaty (or similar understanding), and which consequently requires action from the parties involved.

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

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/casus-foederis