schismatic

Of, relating to, or engaging in schism.

One who promotes or engages in schism.

Pertaining to, of the nature of, or characterized by schism; tending or inclined to or promotive of schism.

One who separates from an existing church or religious faith on account of a difference in opinion; one who partakes in a schism. See schism.

Synonyms Sectary, etc. See heretic.