A.a being οἰκεῖος (signf. II), kindred, relationship, Hdt.6.54, Th.3.86, etc. ; intimacy, friendship, “φιλία καὶ οἰ.” Id.4.19, cf. Pl.Smp.197d : pl., And.1.118, D.18.35, SIG557.35 (iii B. C.).
b. metaph., connexion of things, Pl.R.537c, M.Ant. 4.4, etc.
2. living together as man and wife, domesticity, marriage, “τῆς Ἑλένης” Isoc.10.42, cf. Lys.1.6 ; “εἰς οἰκειότητα καὶ παιδοποιίαν ὁρᾷ” Chor. in Hermes17.215.
II. of words and phrases, proper sense, opp. μεταφορά, Plu.Cic.40, in pl.
III. conformity to nature or environment, Epicur.Sent.40, Frr.197,217.