Sorry... heres the meaning of the word blasphemy

In the sense of speaking evil of God.... or evil-speaking or to speak evil of or abuse

31 "Therefore I say to you, every sin and blasphemy will be forgiven men, but the blasphemy against the Spirit will not be forgiven men. 32Anyone who speaks a word against the Son of Man, it will be forgiven him; but whoever speaks against the Holy Spirit, it will not be forgiven him, either in this age or in the age to come.'"

This AGE or the AGE to come.

Yes blasphemy against the Spirit is speaking evil of it. Also theres no interpretation other than the one Jesus gave when he was accused of doing his works by the power of a devil...God will not except it when anyone calls his power evil. They where constantly saying he had a demon. But if a man does this in ignorance its not the same thing, a man has to know that he is really calling the power of the spirit evil...so how do you judge? Well if a man shows all the fruits of the spirit, then he heals a sick man in the name of christ i wouldnt jump up and say he has done this by the power of a demon. Ye shall know them by their fruits.