Where does “Morava” come from?

Morava (Czech) comes from Latin Marus, from Proto-Indo-European móri, from Proto-Indo-European mer- — to die; to disappear; sea, lake, wetland.

Ancestry of “Morava”, step by step

StepLanguageWordMeaning
1LatinMarusA river that flows into the Danube, probably the Morava
2Proto-Indo-Europeanmórisea; standing water
3Proto-Indo-Europeanmer-to die; to disappear; sea, lake, wetland

Words derived from “Morava

Every word from Proto-Indo-European mer-Every word from Proto-Indo-European móriEvery word from Latin Marus