Born innocent — naif shares its root with native, nation, nature, and natal, all from the PIE word for birth.
A naive person, especially a naive young woman; or an artist who paints in a deliberately simple, childlike style.
From French naïf meaning natural, unaffected, from Old French naif meaning native, natural, from Latin nativus meaning innate, natural, from natus meaning born Key roots: *ǵenh₁- (Proto-Indo-European: "to give birth").