Where does “ابر” come from?

ابر (Classical Persian) comes from Middle Persian ʾbl, from Proto-Iranian abráh, from Proto-Indo-Iranian abʰrás, from Proto-Indo-European n̥bʰrós, from Proto-Indo-European nebʰ- — to become damp, cloudy.

Ancestry of “ابر”, step by step

StepLanguageWordMeaning
1Middle Persianʾbl—
2Proto-Iranianabráhcloud
3Proto-Indo-Iranianabʰráscloud, raincloud
4Proto-Indo-Europeann̥bʰrósrain-cloud, with semantic narrowing to rain,...
5Proto-Indo-Europeannebʰ-to become damp, cloudy

Words derived from “ابر”

Every word from Proto-Indo-European nebʰ- →Every word from Proto-Indo-European n̥bʰrós →Every word from Proto-Indo-Iranian abʰrás →