Czech pěkný

← Old Church Slavonic пѣгъ (cognate)

← Old High German fēh (cognate)

← Ancient Greek ποικίλος (cognate)

← Proto-Indo-European *peh₂ḱ- (derived)

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

← Latin pulcher (cognate)

← Proto-Slavic *pěkrъ (inherited)

→ Czech přepěkný (affix)

→ Polish piękny (cognate)