←
French adret (borrowed)
←
Proto-Indo-European *h₂éd (derived)
←
Proto-Indo-European *h₃reǵ- (derived)
←
Occitan adret (borrowed)
←
Old Occitan adreg (derived)
←
Old Occitan adreit (mention)
←
Old Occitan a (mention)
←
Old Occitan dreg (mention)
←
Old Occitan dreit (mention)