sopor
coma
pass out how about 'slumber'? im not sure if it refers to a deep kind of sleep, but it has 7 letters and it is sleep :)
Steep,Seep Sleep, sheep,
odd
unnatural
ghostly means eerie and/or unnatural
The root word for unnatural is "natural".
Natural is the opposite of unnatural.
deep sleep
The way to spell the word is unnatural.
Parasomnia is a category of sleep disorders. This category involves unnatural and abnormal movements, behaviors, perceptions, dreams, and emotions that occur while falling asleep, during sleep, or being aroused from sleep.
A word beginning with R for sleep is rest.