From Proto-Indo-European *swoyos, suffixed form of root *swé, pronoun of the third person and reflexive (referring back to the subject of a sentence), also used in forms denoting the speaker's social group, "(we our-)selves". See also Russian свой (svoj), Old Irish fein (“self, himself”), German sein, Old Norse sik (“oneself”), Gothic 𐍃𐍅𐌴𐍃 (swēs, “one's own”), Old Church Slavonic свойи (svoйi, “his, her, its”) and свойаку (svoйaku, “kinsman, relative”), Ancient Greek ἔθω (éthō), Latin suescere (“to accustom, get accustomed”), suus and sodalis (“companion”), Sanskrit स्व (sva, “one's own”).
ἴδιος • (ídios) m (feminine ἰδία, neuter ἴδιον); first/second declension
- pertaining to self, that is, one's own
- private (as opposed to public)
- related to
- separate, distinct
- peculiar, specific, appropriate
First and second declension of ἴδιος, ἰδίᾱ, ἴδιον