συμπολίτηςsympolítēs

a native of the same town, i.e. (figuratively) co-religionist (fellow-Christian)

Greek (New Testament) · G4847

Meanings

a fellow-citizen: plural, σ. τ. ἁγίων, opposed to ξένοι κ. πάροικοι, Ephesians 2:19 (Eur.; C.I., 6446; condemned by Atticists; see Rutherford, NPhr., 255 f.).

Same root

σύνsýn · G4862with or together (but much closer than G3326 (μετά) or G3844 (παρά)), i.e. by association, companionship, process, resemblance, possession, instrumentality, addition, etc.
πολίτηςpolítēs · G4177a townsman

Where it appears

Appears 1 times in the Bible.

Ephesians 2:19 So now you Gentiles are no longer strangers and foreigners. You are citizens along with all of God’s holy people. You are members of God’s family.

Source: G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), public domain.