antipapacy
Etymology
From anti- + papacy.
antipapacy means antipapism; the office or reign of an antipope. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- antipapism; the office or reign of an antipope“And as for the perſecution of the Empreſſe which happened long before, and for an other cauſe, to witt, foraſmuch as Vigilius after his predeceſſor Siluerius was dead, and that he was become true Pope, would not keepe the promiſe that he had made, and ſecretlie accomplisht to her during his Antipapacy, to admitt Anthymus and the other Eutychians into his communion.”