Proto-Slavic *rěka

→ Belarusian рака (inherited)

→ Bulgarian река (inherited)

→ Czech řeka (inherited)

→ Old Church Slavonic рѣка (inherited)

→ Lower Sorbian rěka (inherited)

→ Upper Sorbian rěka (inherited)

→ Macedonian река (inherited)

→ Old East Slavic рѣка (inherited)

→ Polish rzeka (inherited)

→ Romanian Reșița (derived)

→ Romanian Râșca (derived)

→ Romanian Râșca (derived)

→ Russian река (inherited)

→ Serbo-Croatian река (inherited)

→ Serbo-Croatian reka (inherited)

→ Serbo-Croatian rijeka (inherited)

→ Serbo-Croatian ријека (inherited)

→ Slovak rieka (inherited)

→ Slovene reka (inherited)

→ Silesian rzyka (inherited)

→ Ukrainian ріка (inherited)