limbo Synonyms

oblivion place of torment imprisonment void underworld twilight styx quod purgatory prison perdition penfold oubliette obscurity castle in the air holding pattern infernal regions Siberia out there obliviousness nether world hypomnesia bottomless pit blockout netherworld inferno left field prison house back burner nullity nowhere entombment durance darkness custody coop confinement carelessness captivity cage blank bilboes anonymity amnesia forgetfulness gaol nothingness nonexistence nirvana neglect