counterreformer

• a word derived from reformer.
  reformer

  noun

  a person devoted to bringing about significant change in attitudes and practices, such as in politics or society generally or within a particular organization.

Related Words

• agitator
• anarchist
• extremist
• fanatic
• firebrand
• insurgent
• leftist
• militant
• progressive
• rebel
• renegade
• revolutionary
• rioter
• subversive