dis·es·tab·lish·men·tar·i·an or Dis·es·tab·lish·men·tar·i·an 
(dĭs′ĭ-stăb′lĭsh-mən-târē-ən)
(dĭs′ĭ-stăb′lĭsh-mən-târē-ən)n.
An opponent of an established order, especially one who opposes state support of an established church.
dis′es·tab′lish·men·tari·an adj.
dis′es·tab′lish·men·tari·an·ism n.