Schismatic

Part of speech: noun (n.)

One who creates or takes part in schism; one who separates from an established church or religious communion on account of a difference of opinion. "They were popularly classed together as canting schismatics." Macaulay.

Synonyms: Heretic; partisan. See Heretic.

Part of speech: adjective (a.)

Of or pertaining to schism; implying schism; partaking of the nature of schism; tending to schism; as, schismatic opinions or proposals.