A Lost God (or a Dead God) is a Quelmar deity who has been stripped of their typical divine eminence and placed in a position where they can no longer directly interfere with the day-to-day life of the Quelmar Realm.
List of Lost Gods
Bahamut
Pelor
During the Holy War, Nerull (then the only God of Death) schemed a way to strip Pelor of his control over Life. For the next few decades, Pelor no longer existed as a whole deity, and was instead splintered into the gods Lathander and Helm. Pelor, however, was restored to power in the early PR era when Nerull was overthrown by The Raven Queen.