Welsh rhad

← Proto-Celtic *ɸratom (inherited)

← Proto-Celtic *ɸar- (mention)

← Irish rath (cognate)

← Ancient Greek ἔπορον (cognate)

← Proto-Indo-European *perh₃- (derived)

← Cornish ras (cognate)

← Latin parō (cognate)

← Old Welsh rat (inherited)

← Sanskrit पृणाति (cognate)