←
Proto-Indo-European *ped- (derived)
←
Proto-Indo-European *pod- (mention)
←
Proto-Indo-European *peh₂- (root)
←
Proto-Indo-European *peh₂- (derived)
←
Proto-Slavic *pasti (inherited)
←
Proto-Slavic *pasti (inherited)
→
Serbo-Croatian опасти (prefix)
→
Serbo-Croatian упасти (prefix)