Dissenter /(?)/

Dis·sent·er

Dissenter

n.
  1. One who dissents; one who differs in opinion, or declares his disagreement.
  2. One who separates from the service and worship of an established church; especially, one who disputes the authority or tenets of the Church of England; a nonconformist. (Eccl.)
    Dissenters from the establishment of their several countries.
    Robert Brown is said to have the first formal dissenter.