SCHISMATIZE
Etymology
Verb
schismatize (third-person singular simple present schismatizes, present participle schismatizing, simple past and past participle schismatized)
(transitive) To cause to break apart by way of schism.
(intransitive) To take part in schism; to make a breach of communion in the church.
Source: Wiktionary
Schis"ma*tize, v. i. [imp. & p. p. Schismatized; p. pr. & vb. n.
Schismatizing.] Etym: [Cf. F. schismatiser.]
Definition: To make part in schism; to make a breach of communion in the
church.
Source: Webster’s Unabridged Dictionary 1913 Edition