blasphemer
/ˈblæsfəmər/Definitions
1. noun
A person who blasphemes; one who speaks irreverently of sacred things.
“The court found the blasphemer guilty of offending the community’s deeply held religious beliefs.”
2. noun
A person who commits blasphemy; an impious person.
“The blasphemer was shunned by the community for his reckless disregard of sacred traditions.”