πατήρ
πατήρ, ὁ, gen. and dat. πατέρος, πατέρι in Ep. and Lyr., Att. πατρός, πατρί (which is also the commoner form in Hom., Hes., and Pi.) ; acc. always πατέρα ; voc. πάτερ : pl. πατέρες, πατέρας, πατέρων ( πατρῶν only Od. 4.687, 8.245) ; dat. πατράσι [ᾰ] (cf. Skt. loc. pl. pitṛṣu, no dat. pl. occurs in Hom. or Hes.), late Ep. πατέρεσσι Q.S. 10.40 :—