insomnia

noun 0.610

idiopathic hypersomnia

noun 0.585

narcolepsy

noun 0.570

fatal

noun 0.565

sleeping sickness

noun 0.554

fatality

noun 0.548

sudden infant death syndrome

noun 0.548

insomniac

noun 0.545

dead sleep

noun 0.533

terminal illness

noun 0.530

final illness

noun 0.528

sleeplessness

noun 0.526

sleep disorder

noun 0.520

somnambulism

noun 0.516

nonfatal

noun 0.515

sleep paralysis

noun 0.505

crib death

noun 0.502

feline infectious peritonitis

noun 0.500

narcoleptic

noun 0.500