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Around the globe, Lethe (Lete , Lethe , ليثي ) is quite a rare epicene forename. The given name Lethe is characteristic of Albania, where it is a rare masculine name, Portugal, where it is a rare feminine name, and Ethiopia. Measured by absolute frequency, it is the most numerous in India, Ethiopia, and Egypt. More frequently, Lethe is the last name as well as the forename.
Lethe is also a name for the fictitious and mythical characters: Lethe , the river of forgetfulness in the Greek underworld or Greek spirit of forgottenness, oblivion; Lete and Lete .