die Läuterung
Meanings
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A fun look at the word "lauter", why it is much more than just "louder" and what cool things we can do with it.
Vocab:
lauten, laut, der Laut, lauter, unlauter, der Klang, läuten

Word Family
The core idea of this root was
hearing
It’s the origin of loud and listen as well as Slavic (originally: word) and slave (originally: slavic person sold as slave in Roman times) and Hercules.