WordReference Random House Unabridged Dictionary of American English © 2026
dis•es•tab•lish•men•tar•i•an
(dis′i stab′lish mən târ′ē ən),USA pronunciation n.
adj.
dis′es•tab′lish•men•tar′i•an•ism, n.
- Religiona person who favors the separation of church and state, esp. the withdrawal of special rights, status, and support granted an established church by a state;
an advocate of disestablishing a state church.
adj.
- Religionof, pertaining to, or favoring the disestablishment of a state church.
- dis-1 + establishment + -arian 1880–85