Where does “ভাই” come from?

ভাই (Old Assamese) comes from Sanskrit भ्रातृ, from Proto-Indo-Aryan bʰráHtā, from Proto-Indo-Iranian bʰráHtā, from Proto-Indo-European bʰréh₂tēr — brother.

Ancestry of “ভাই”, step by step

StepLanguageWordMeaning
1Sanskritभ्रातृbrother; kinsman, relative; friend
2Proto-Indo-AryanbʰráHtābrother
3Proto-Indo-IranianbʰráHtābrother
4Proto-Indo-Europeanbʰréh₂tērbrother

Words derived from “ভাই”

Every word from Proto-Indo-European bʰréh₂tēr →Every word from Proto-Indo-Iranian bʰráHtā →Every word from Proto-Indo-Aryan bʰráHtā →