'Blasphemer' definitions:

Definition of 'blasphemer'

From: WordNet
noun
A person who speaks disrespectfully of sacred things

Definition of 'Blasphemer'

From: GCIDE
  • Blasphemer \Blas*phem"er\, n. One who blasphemes. [1913 Webster]
  • And each blasphemer quite escape the rod, Because the insult's not on man, but God ? --Pope. [1913 Webster]