noun
or api·ko·ros ˌäpēˈkȯrəs
( plural apikor·sim -rsə̇m)
Etymology: Yiddish & Hebrew; Yiddish apikurus, from Hebrew apīqōrōs, from Greek Epikouros Epicurus — more at epicure
: a Jew who is lax in observing Jewish law or who does not believe in Judaism ; also : skeptic , atheist