venial

1.) that may be forgiven; pardonable 2.) that may be excused or overlooked; excusable 3.) Theol. not causing a spiritual death: said of sin either not serious in itself or, if serious, not adequately recognized as such or not committed with full consent of one's will

Light Fan, pg. 64 Brit HC

Again, not full in keeping, but moreso than the previous, and at least stretchable, in context. Check other/later versions, perhaps. May switch to "genial but ignorant."