oblivion

noun 0.664

forgotten

noun 0.635

forgottenness

noun 0.598

souterrain

noun 0.588

undercroft

noun 0.557

abyss

noun 0.556

hellhole

noun 0.544

memory hole

noun 0.543

prison house

noun 0.543

cellar

noun 0.543

cave

noun 0.535

immurement

noun 0.535

prison

noun 0.534

lacune

noun 0.534

cavern

noun 0.533

bunker

noun 0.532

chamber of horrors

noun 0.530

obscurity

noun 0.529

prisonhouse

noun 0.528

overlook

noun 0.528

tomb

noun 0.526

lacuna

noun 0.526

alcove

noun 0.525

forgetting

noun 0.524

hiding place

noun 0.523

vault

noun 0.522

lair

noun 0.522

cachette

noun 0.521

outhouse

noun 0.516

hideaway

noun 0.515

underground

noun 0.512

labyrinth

noun 0.511

sepulchre

noun 0.507

cubbyhole

noun 0.507

burial chamber

noun 0.507

hideout

noun 0.506

locker

noun 0.505

underworld

noun 0.505

grotto

noun 0.505

abysm

noun 0.504

bottomless pit

noun 0.503

ossuary

noun 0.502

forgetfulness

noun 0.502

jail

noun 0.501

enclave

noun 0.501

cloister

noun 0.501