brōthar m
From Proto-Germanic *brōþēr, from Proto-Indo-European *bʰréh₂tēr.
Germanic cognates: Old Frisian brōther (West Frisian broer), Old English brōþor (English brother), Middle Dutch broeder (Dutch broeder), Old High German bruodar (German Bruder), Old Norse bróðir (Swedish broder, bror), Gothic 𐌱𐍂𐍉𐌸𐌰𐍂 (brōþar).
Indo-European cognates: Sanskrit भ्रातृ (bhrātṛ), Avestan [script needed] (brātar-)[script needed], Ancient Greek φράτηρ (phrátēr), Latin frāter, Old Church Slavonic братръ (bratrŭ) (Russian брат (brat)), Latvian brālis, Old Irish bráthair, Tocharian A pracar, Tocharian B procer.