mortal sin

(in the Roman Catholic Church) sin that causes the loss of God's grace and leads to damnation unless it is confessed and forgiven （天主教中）弥天大罪.

morning-glory, mornings, morocco, moron, moronic, morose, morose-ness, morosely, morpheme, morphia, morphine, morphological, morphology, morris dance, morris dancer, morris dancer., morrow, Morse, morsel, mortal, mortality, mortality table, mortally, mortar, mortar-board, mortgage, mortgagee, mortgager, mortgagor, mortician, mortification, mortify, mortise (also mortice), mortise lock, mortuary, mosaic, Moscow, moselle, mosey, Moslem,