chiefly archaic <主古>
- a person who does not believe in religion or who adheres to a religion other than one's own无宗教信仰者; 异教徒：
as plural noun the infidel they wanted to secure the Holy Places from the infidel.他们要从异教徒手中夺得圣地。
- adhering to a religion other than one's own异教的：
the infidel foe.
异教敌人。
词源
late 15th cent.: from French infidèle or Latin infidelis, from in- 'not' + fidelis 'faithful' （from fides 'faith', related to fidere 'to trust'）. The word originally denoted a person of a religion other than one's own, specifically a Muslim (to a Christian), a Christian (to a Muslim), or a Gentile (to a Jew).