adju-stemhardbraveTraditionally derived from Proto-Indo-European *kort-ús, from a Schwebeablaut o-grade formation of *kret- (‘strong, powerful’), and compared with Ancient Greek κρατύς (kratús, ‘strong’), Ancient Greek κράτος (krátos, ‘strength, power, dominion’). Kroonen appears skeptical enough, however, to espouse an alternative derivation from Strunk and Heidermanns from Proto-Indo-European *(s)ker- (‘to cut’), comparing Lithuanian kartùs (‘bitter’) and Proto-Slavic *kortъ̀kъ (‘short’) (though he is not skeptical enough to offer this latter theory as the main etymology).Compare also Ashkun kāṭ (‘strength’), Kamkata-viri koṭ (‘strength’), Prasuni kaṭ (‘strength’), Waigali kāṭ (‘strength’).