"Blasphemy" is deliberate, intentional, deliberate, thoughtful, malicious, sarcastic backbiting, perversion of the Spirit, the Meaning, the Truth of God's Laws, the Commandments.

It is a denigration, an insult, an open mockery of God, of the Word of His Will, a blasphemy of the Name of Jesus Christ, of His Doctrine of the Will of God.  

"Blasphemy" is also ignoring God's Will as revealed in His Laws, Commandments, unbelief and denial of true faith; turning to other gods, idolatry.                    

"Blasphemy" is also a slanderous accusation, a cynical, demeaning attitude toward the righteous who revere as their spiritual sanctuary the Holy Scriptures of the Prophets, the Doctrine of Christ concerning the Will of God. 

"Blaspheming" God is also a blasphemy of a person who ascribes to himself qualities and virtues that are unique to God.