Lethe

In Greek mythology, Lethe (; Ancient Greek: ΛήθηLḗthē; Ancient Greek:, Modern Greek:) was one of the rivers of the underworld of Hades. In Classical Greek, the word () literally means "forgetting", "forgetfulness". The river is also known as Amelēs Potamos, or the "river of unmindfulness".

The Lethe flowed around the cave of Hypnos and through the Underworld where all those who drank from it experienced complete forgetfulness. The river was often associated with Lethe, the personification of forgetfulness and oblivion, who was the daughter of Eris (Strife).