Old East Slavic печера

← Proto-Slavic *peťera (inherited)

← Proto-Slavic *peťь (mention)

← Proto-Slavic *-era (mention)

← Proto-Slavic *peťi (mention)

← Proto-Slavic *-tь (mention)

→ Belarusian пячора (inherited)

→ Polish pieczara (mention)

→ Russian печора (inherited)

→ Ukrainian печера (inherited)