Belarusian дно

← Proto-Balto-Slavic *dubno (inherited)

← Proto-Indo-European *dʰubno- (inherited)

← Proto-Indo-European *dʰewb- (mention)

← Old East Slavic дъно (inherited)

← Proto-Slavic *dъno (inherited)

→ Belarusian бездань (affix)