This verse-final adjective krataiḗ can be explained as a morphologically leveled replacement of an older feminine form, to be reconstructed as *krataí-u̯i-ă and meaning ‘whose power [*u̯i-] has the upper-hand [krátos]’. The morphological leveling involves a replacement of the alternation *-́i̯ă-/-i̯ā́- by way of non-alternating *-i̯ā́-.