pagan
Pronunciation: /ˈpeɪg(ə)n/
noun
- a person holding religious beliefs other than those of the main world religions: a Muslim majority had to live in close proximity to large communities of Christians and pagans
- dated, derogatory a non-Christian.
- a member of a modern religious movement which seeks to incorporate beliefs or practices from outside the main world religions, especially nature worship.

Origin:
late Middle English: from Latin paganus 'villager, rustic', from pagus 'country district'. Latin paganus also meant 'civilian', becoming, in Christian Latin, 'heathen' (i.e. one not enrolled in the army of Christ)