Whether cursing is a mortal sin?

❌ Objection 1 : It would seem that cursing is not a mortal sin. For Augustine in a homily On the Fire of Purgatory [*Serm. civ in the appendix of St. Augustine's works] reckons cursing among slight sins. But such sins are venial. Therefore cursing is not a mortal but a venial Sin.

❌ Objection 2 : Further, that which proceeds from a slight movement of the mind does not seem to be generically a mortal sin. But cursing sometimes arises from a slight movement. Therefore cursing is not a mortal sin.

❌ Objection 3 : Further, evil deeds are worse than evil words. But evil deeds are not always mortal sins. Much less therefore is cursing a mortal sin.