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 :)
odd
Steep,Seep Sleep, sheep,
unnatural
ghostly means eerie and/or unnatural
The root word for unnatural is "natural".
Natural is the opposite of unnatural.
deep sleep
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.
The way to spell the word is unnatural.
A word beginning with R for sleep is rest.