English word purgatory comes from Latin purgo (I clean; I purge.)

Detailed word origin of purgatory

Dictionary entry	Language	Definition
purgo	Latin (lat)	I clean; I purge.
purgatorium	Latin (lat)	(Ecclesiastical) purgatory. A purgative. Act or means of cleansing.
purgatory	English (eng)	Tending to cleanse; expiatory. (Christianity) Alternative form of Purgatory. Any situation where suffering is endured, particularly as part of a process of redemption.

Words with the same origin as purgatory