black hole

noun 0.572

dustbin of history

noun 0.571

hole

noun 0.554

oubliette

noun 0.543

erasure

noun 0.537

security hole

noun 0.536

oblivion

noun 0.531

donut hole

noun 0.530

blue hole

noun 0.522

mental block

noun 0.521

mousehole

noun 0.516

white hole

noun 0.513

wormhole

noun 0.510

rabbit hole

noun 0.509

false memory

noun 0.503

hellhole

noun 0.502

newspeak

noun 0.501