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This Proto-Indo-European entry contains reconstructed words and roots. As such, the term(s) in this entry are not directly attested, but are hypothesized to have existed based on comparative evidence.



*n̥bʰrós or *n̥bʰrís

  1. rain-cloud, with semantic narrowing to rain, cloud


PIE *n̥bʰrós/*n̥bʰrís "rain-cloud, rain, cloud" is probably a zero-grade derivative of *nebʰ-, the root that also gave *nébʰos. However, that derivative remains a bit problematic because beside clearly matching Sanskrit, Avestan, Latin and Armenian cognates there are formal problems with Ancient Greek ὄμβρος (ómbros) with problematic initial ο- and the cluster -μβ- (proper Greek reflex after the expected assimilation of *n to *m to the following labial would be -μφ-), as well as with ἀφρός (aphrós, foam), which does formally provide a perfect match, but is usually dropped from consideration due to heavy semantical mismatch (cf. Beekes, Frisk 1960:197 etc.).