This noun appears in Psalm 88:12, where the psalmist asks whether God's wonders will be known 'in the land of forgetfulness.' This designation parallels 'darkness' in the previous line, both referring to Sheol, the realm of the dead. The term captures oblivion's essence—the place where memory ceases, where the dead are forgotten and forget. The question is rhetorical: how can the dead in Sheol's darkness and oblivion praise God or remember His wonders? This underlies the psalmist's urgent plea for rescue before death silences testimony.