..infidel..

in·fi·del

Pronunciation:

\ˈin-fə-d^əl, -fə-ˌdel\

Function:

noun

Etymology:

Middle English infidele, from Middle French, from Late Latin infidelis unbelieving, from Latin, unfaithful, from in- + fidelis faithful — more at fidelity

Date:

15th century

Infidel (literally "one without faith") is an English word meaning "one who doubts or rejects central tenets of a religion or has no religious beliefs", especially in reference to Islam.

1: one who is not a Christian or who opposes Christianity2 a: an unbeliever with respect to a particular religion b: one who acknowledges no religious belief3: a disbeliever in something specified or understood

— infidel adjective