οἰκείαν (oikeian)
οἰκείαν is an Ancient Greek form of οἰκεῖος, meaning “of the household; one's own”. It is the accusative singular feminine adjective.
Found 362 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 3.45.2: πόλις τε ἀφισταμένη τίς πω ἥσσω τῇ δοκήσει ἔχουσα τὴν παρασκευὴν ἢ οἰκείαν ἢ ἄλλων ξυμμαχίᾳ τούτῳ ἐπεχείρησεν;
All forms of οἰκεῖος (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.