Synonyms of infidel

2 Syllables
skeptic, atheist, heathen, scoffer, pagan, pagans, pantheist
3 Syllables
agnostic, freethinkers, gentile, schismatic, idolist, paganist, sectary, sectaries, profaner, heretic, freethinker, polytheist, profaning
4 Syllables
heretical, misbelieving, non-believer, nonbeliever, unbeliever, disbelievers, idolater, nonbelievers, disbeliever, sacrilegious, unbelievers, materialist, rationalist, nonworshiper, unsanctified, polytheistic
5 Syllables
irreligionist, separationist, unconsecrated