Antipope :: Antipope (n.) One who is elected, or claims to be, pope in opposition to the pope canonically chosen; esp. applied to those popes who resided at Avignon during the Great Schism..
Apopemptic :: Apopemptic (a.) Sung or addressed to one departing; valedictory; as, apoplectic songs or hymns..
Dispope :: Dispope (v. t.) To refuse to consider as pope; to depose from the popedom.