Old Church Slavonic тещи

← Proto-Balto-Slavic *tektei (derived)

← Proto-Indo-European *tekʷ- (derived)

← Proto-Slavic *teťi (inherited)

→ Bulgarian тека (inherited)

→ Old Church Slavonic прѣдътеча (affix)

→ Old Church Slavonic потещи (prefix)

→ Old Church Slavonic прѣдътещи (prefix)