(n.) The quality or character of a sectarian; devotion to the interests of a party; excess of partisan or denominational zeal; adherence to a separate church organization.

clannishness clanship cliqueyness cliquishness cliquism denominationalism eclecticism esprit de corps ethnocentricity exclusiveness faction factionalism partiality partisanism partisanship party spirit schismatism sectarism sectionalism syncretism