-ų

Etymology
From ; compare 🇨🇬, 🇨🇬, 🇨🇬, exemplifying a Balto-Slavic shortening and raising of 🇨🇬; compare 🇨🇬, 🇨🇬, 🇨🇬. According to Eugen Hill, this shortening was regular before final *-N in Balto-Slavic (compare feminine accusative singular ); whereas *o was raised to *u in stressed final syllables. Compare ; see for more.