←
Proto-Celtic *ɸro (cognate)
←
Proto-Germanic *fram (cognate)
←
Ancient Greek πρός (mention)
←
Proto-Indo-European *per- (root)
←
Proto-Indo-European *pró (derived)
←
Proto-Indo-European *pro- (mention)
←
Proto-Indo-European *per- (mention)
→
Ancient Greek πρῶτος (mention)
→
Ancient Greek πρός (mention)
→
Ancient Greek προ- (mention)
→
Ancient Greek προάγω (mention)
→
Ancient Greek πρίν (mention)
→
Ancient Greek ὑποπρό (mention)
→
Ancient Greek πρόσω (mention)