Proto-Slavic *bratъ

→ Belarusian брат (mention)

→ Bulgarian брат (mention)

→ Czech bratr (mention)

→ Kashubian brat (mention)

→ Old Church Slavonic братръ (mention)

→ Upper Sorbian bratr (mention)

→ Macedonian брат (mention)

→ Polish brat (mention)

→ Polabian brot (mention)

→ Russian брат (mention)

→ Rusyn брат (mention)

→ Serbo-Croatian brat (mention)

→ Serbo-Croatian брат (mention)

→ Slovak brat (mention)

→ Slovene brat (mention)

→ Ukrainian брат (mention)