Duktė – daughter, and sesuo – sister, are the only two feminine words of the fifth declension, they have the suffix -er- in the other cases. One word, moteris – woman, female, is both of the fifth and the third declensions, because it has variant genitive singular, both variants of which (-s and -ies) are equally apt, and it has a gen. pl. -ų. Two more words, dieveris "m" (older) – brother-in-law, and obelis "f" – apple tree, are the same case as moteris. The word dieveris, -ies (-ers) "m", having more close meaning to a proper one, possibly has the fifth-type-like masculine singular instrumental (dieveriu), which is taken from the first declension, while the words of the third declension have -imi (dantimi, vagimi), without a gender distinction. But -imi is normal as well for the masculine nouns of the fifth declension, for example – akmenimi / akmeniu.