[quote="MidnightSun12, post:5, topic:287550"]
I recommend reading the following article:
Profanity can indeed be a mortal sin if it is directed with malice towards somebody.
That article didn't make the case for me on cursing. It says that because its against the second commandment, the first criteria is already fulfilled. I don't see how simply being against a commandment makes something a "serious matter" in the sense of mortal sin. If that were so, all sins would be mortal sins.
It further says that simply engaging it cursing implies full consent of the will. Since cursing is usually a habit, I don't think this can be said to be fulfilled either.
The blogger is also an SSPX member, which I almost hate to point out, but I am not sure a Roman Catholic should use this guy as an authority. He seems like a decent fellow with a good intention, bit his use of the CCC only bolsters his argument in regard to profaning God, the Church, and related holy persons and objects.
With actual cursing, if one is truly trying to lay a curse on someone, then I would say it is a mortal sin, as trying to damn someone, however futile, would be akin to murder. But saying words that are vulgar out of habit or anger isn't the same!