If he will break one commandment, he will likely break another. Cursing causes a person to offer a profane and wicked prayer. Such a one, asks God to condemn someone in order to satisfy their desire for revenge. Profanity not only corrupts you, but it corrupts others. Others hear it and copy you.
Profanity indicates a lack of intelligence and maturity.
Also, it often shows a lack of a good vocabulary. . Profanity is displeasing to God. The wrong use of God's name is hypocrisy. Ananias and Sapphira.